The Future Of Human Evolution Essay

The Future Of Human Evolution Essay
The Future of Human Evolution
Evolution, the science of how populations of living organisms change over time in response to their environment, is the central unifying theme in
biology today. Evolution was first explored in its semi–modern form in Charles Darwin 's
1859 book, Origin of Species by means of Natural Selection. In this book, Darwin laid out a strong argument for evolution. He postulated that all
species have a common ancestor from which they are descended. As populations of species moved into new habitats and new parts of the world, they
faced different environmental conditions. Over time, these populations accumulated modifications, or adaptations, that allowed them and their
offspring to survive better in their...show more content...
The question is can humans evolve (physically), that is through changes of some sort to the general human gene pool, enough to be considered a
different species sometime in the future. The answer to this is tricky. The answer is
"yes" if there is no human intervention and "not likely" (or atleast controlled) if there is human intervention. The more
interesting answer is the latter. The first answer deserves some mention. Through the subtraction or addition (that is through chance changes of some
sort) of alleles (different forms of a characteristic gene) from the overall gene pool until homo sapiens are no longer is feasible. One might ask how
and were this is occurring. The answer is human genes are changing all the time through radiation and spontaneous mutations (the latter more rapidly
no than ever since the human population is now larger than ever) and one can see these changes to the overall gene pool in the disappearance of certain
human tribes within parts of Africa and South America..
These tribes unfortunately take exclusive alleles with them. What about Natural
Selection in present human culture. Some peoples are growing faster than others, for example–Chinese faster than any other in the present world, thus
the large
Chinese population.
Get more content on HelpWriting.net

Essay on Evolution
Essay on Evolution
There are many mechanisms that lead to evolutionary change. One of the most important mechanism in evolution is natural selection which is the
differential success in the reproduction of different phenotypes resulting from the interaction of organisms with their environment. Natural selection
occurs when a environment makes a individual adapt to that certain environment by variations that arise by mutation and genetic recombination. Also it
favors certain traits in a individual than other traits so that these favored traits will be presented in the next generation. Another mechanism of evolution
is genetic drift. Genetic drift is a random change in a small gene pool due to sampling errors in propagation of alleles or...show more content...
Some bacteria had genes that coded for enzymes that specifically destroyed certain antibiotics such as ampicillin. From this incident, scientists were
able to deduce that natural selection helped the bacteria to inherit the genes for antibiotic resistance. Scientists have also been able to use biochemistry
as a source of evidence. The comparison of genes of two species is the most direct measure of common inheritance from shared ancestors. Using DNA
–DNA hybridization, whole genomes can be compared by measuring the extent of hydrogen bonding between single–stranded DNA obtained from two
sources. The similarity of the two genes can be seen by how tightly the DNA of one specie bonds to the DNA of the other specie. Many taxonomic
debates have been answered using this method such as whether flamingos are more closely related to storks or geese. This method compared the
DNA of the flamingo to be more closely related to the DNA of the stork than the geese. The only disadvantage of this method is that it does not give
precise information about the matchup in specific nucleotide sequences of the DNA which restriction mapping does. This technique uses restriction
enzymes that recognizes a specific sequence of a few nucleotides and cleaves DNA wherever such sequences are found in the genome. Then the DNA
fragments are separated by electrophoresis and compared to

Argumentative Essay On Evolution
Madison Wenig
Mr. Kellerman
Honors Biology 2
19 May 2017
Evolution
There always has been a controversy whether evolution really did happen or not. Many evolutionists, philosophers and biologists have presented
sufficient evidence that evolution is true. Yet there is still debate about this contentious topic. With the facts and findings offossil records of earlier
species, ideas of initial theorists, and our own genetics and DNA, evolution can be hard to prove wrong. Evolution is not just a change over time, but
that all life on Earth shares a common ancestor. This process is occurring in our lives right now. What exactly is evolution? Evolution is "the process
through which the characteristics of organisms change over successive generations, by means of genetic variation". (What is evolution) Simply,
descent with modification. Charles Darwin was the first person with the acceptable explanation of evolution. Although his theory gave forth too many
tremendous advances, he did not build this theory on his own. He learned and built off earlier theorists, like Jean–Baptiste Lamarck, "who indorsed
linear evolution". (evolution) As well as Aristotle, a Greek philosopher, with his concept of Scala Nature. These early theorists served as a foundation
for Charles Darwin's theory. Although Darwin's theory was important, a greater attribution to evolution was founded. That is the uncovering of fossils.
Fossils are significant to the evolution because they show how life on Earth was

Evolution of Science Essay
The idea of a world progressing, or evolving, in science hasn't been around forever. In fact, the Enlightenment period in the seventeen hundreds with
scientists such as Isaac Newton the man who discovered gravity, Louis Pasteur the chemist who invented the vaccine to prevent rabies, Charles Darwin
the father of evolution, Benjamin Franklin the first scientist to toy with the dangers and possibilities of electricity, and so many more wonderful
scientists was the start of the "progress" that revolutionized our world. Of the scientists who progressed our world, few shaped modern biology the way
Charles Darwin managed to. Thomas Kuhn saw the progress people like Darwin made not as truth seeking, but simply as filling in another piece of
...show more content...
His "discovery" had already been interpreted one way, all Newton did was reinterpret the observed gravity in a new way, according to Kuhn.Isaac
Newton gave science the observation of gravity that pulls molecules together, without him, DNA could not be bound to the Universe and molecules
would never bond to one another. Darwin's Big Bang theory relies on the explanation of Gravity through Isaac Newton. With Newton's science, other
scientists made discoveries that built upon his science to evolve the theoretical thoughts of the universe to Charles Darwin's evolution. Thomas Kuhn
believed that science did not build upon itself, but the systematic, rather than random, ways of science lead to paradigm shifts when one discovery was
found to be incorrect resulting in a new, rather than expanded old, idea. When a shift occurs, new scientists emerge with open minds and new ideas
older scientists over–look. These new scientists begin new paradigms and the process of discovery continues until imperfections are found with the
current paradigm. Kuhn believed that the newer scientists did not just build on the older scientists, but spun off in new directions.
Thomas Kuhn believed that Darwin's evolution had undergone shifts. He had many ideas of how evolution occurred and toyed with many of them.
According to Kuhn, changes in beliefs and ideas after finding one belief did not

Is Evolution Real?
Evolution is "the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the
history of the earth..". Evolution can show how man, etc. have changed over time. Five things that prove evolution are, fossil records, embryology,
comparative anatomy, molecular biology, and direct observation. With evidence to back them up, I will prove that these five things show evolution is
real.
Fossil records play a big part in evolution. They show the remains of ancestors of animals, humans, etc. Fossils are bones, bones can show the change
/ development in the creature of which it derived from. A lot of fossils look very similar to species today. This shows that a species can change/adapt
...show more content...
Homologous means "having the same relation, relative position, or structure, in particular.", analogous means, "comparable in certain respects,
typically in a way that makes clearer the nature of the things compared.", and vestigial means, "forming a very small remnant of something that was
once much larger or more noticeable."
Molecular biology also has a lot to do with evolution. Molecular biology (DNA) is the study of DNA. DNA is found in our cells. DNA is who we are.
DNA can be traced back using advanced technology. Using this we can compare and contrast the differences in DNA from past species to present
species.
Direct observation is the final evidence for evolution. By observing a species in their natural habitat, you can see how they adapt. For example, the
peppered moths. Originally they were white, with black and grey specks. As the industrial revolution began, the trees they laid on for protection, started
to turn black. The moths then were being eaten by birds. The moths adapted to their environment, and slowly became black with grey specks.
Overall, fossil records, embryology, comparative anatomy, molecular biology, and direct observation, all support the idea of evolution. Each come into
play at different times, but all are needed to back up the idea of

Argumentative Essay On Evolution
Evolution It has always been a mystery of how life on Earth started. Although we may not be able to find out exactly how life originated, we can find
out how life has changed over time through the theory of evolution. Evolution is the process by which all living organisms come through a long
history of changes shaped by physical and chemical processes still taking place. There are debates between whether the theory of evolution is truly
scientific. The argument stems from why evolution is considered a "theory." To many, a theory is simply defined as someone's opinion. Inbiology, a
theory is "an explanation of some natural phenomenon with well supported evidence from experiments or observations" (Reed Wicander, 2012).
Discovery of Evolution
Between 1831 and 1836, Charles Darwin embarked on a five–year voyage after graduating from Cambridge University with a degree in theology.
Darwin made a visit to the Galapagos Islands, where he made observations which changed his ideas on present–day species. The idea the people of that
time before his discovery held on to the concept of the fixity of species, where all species were created in their current forms with little to no changes
at all. After observing fossils of past mammals and the 13 species of finches living on the island, Darwin realized that these animals came from a
common ancestor. After making such observations, he was convinced that "all living organisms derived from ancestors that lived in the past with some

Essay on Evolution VS. Creationism
Since the beginning of the human race there has been a lingering question as to the origins of man and how all living things acquired their
characteristics. The two main theories that arose over time were Creationism and Evolution, both of which provided very distinct answers to this
question. Creationism based its answer on the idea of a supernatural power or being that created the entire universe, man and the numerous other
organisms that live within it. While, Evolution theorizes that all living things have the potential to change and grow over time into something new and
different. So in other words, one theory suggests that humans and all the organisms on Earth are the result of divine design, while the other indicates
that they...show more content...
Every one of these flaws points out that the Creationists theory that the Earth, all of the organisms on it, and everything that surrounds it has not
changed or been altered since the flood is inaccurate. Biogeography for example shows that "closely allied" species have a tendency to live on the "same
continent... or within the same group of oceanic islands... despite their species–by–species preferences for different habitats, food source, [and] of
conditions of climate" (Quammen 4). The explanation for this is that "they descended from common ancestors" and this can be verified with the
paleontology flaw because that flaw deals with the fossils of plants and animals "that had [either] become extinct or that still existed but in different
forms" which indicates not only that organisms have changed over time, but also provides evidence that "closely allied" organism have lived in the
same areas of centuries (Quammen 4; Parks 24). Then in the taxonomic classification flaw these "closely allied" spices can be "systematically
classified, according to their shared similarities" which, suggests that "closely allied" organisms descended from common ancestor because of the traits
and similar organs that allows this type of classification (Quammen 5). The presence of these similar traits and organs introduces the flaw of vestigial
characteristics because although some of these do not have any current

Essay on The History of Human Evolution
The History of Human Evolution
By definition, human evolution is the development, both biological and cultural, of humans. Human ideologies of how the evolution of man came to
be is determined by cultural beliefs that have been adopted by societies going back as far as the Upper Paleolithic era, some 40,000 years ago.
Through the study of paleoanthropology, we have come to determine that a human is any member belonging to the species of Homo Sapiens.
Paleoanthropologists, while studying the evolution of humans, identify and explain evolutionary changes that occur throughout time that aid in the
development of the human species. It will be through the examination of human physical traits, human origins from pre–humans to modern...show more
content...
Modern humans have a "braincase volume of between 79.3 and 91.5 cubic inches".(Gallagher) Throughout the development of humans, one can
notice that the brain has more than tripled in size. This augmentation may be related to behavioral patterns of the hominids with an increase in
number and sophistication of stone tools and other artifacts. The art of tool making along with other learnt skills made it possible for hominids to
heighten their ability to live in a range of different environments. "The earliest hominine fossils show evidence of marked differences in body size,
which may reflect a pattern of the different sexes in our early ancestors".(Gallagher) Females tended to be smaller, weighing in at about 70 lbs and
measuring 3 to 4 feet tall, while men were on average 5ft tall and weighing 150lbs. This drastic size difference between genders decreased through
time, sometime after a million years ago. "The third major trend in hominine development is the gradual decrease in the size of the face and
teeth."(Microsoft Encarta) Unlike the apes (from whom we derived) that were characterized by large, tusk–like canine teeth, the earliest hominine
remains were smaller in size and had canines that projected slightly. Also we can see a reduction in the size of the face and jaws. "In early hominines,
the face was large and positioned in front of the braincase. As the teeth became smaller and the brain expanded,

Essay on human evolution
The central purpose of this essay is to critically discuss the importance of understanding human evolution and the history of psychology for the modern
psychologist. For the human evolution, the essay will be addressing on how we and other species descended from our ancestors and how the different
environment has helped to us to become more adaptable. Regarding the history of psychology, the essay will be discussing on how psychology
branched off from the philosophy approach to become its own science. The essay will then go on discussing how the understanding of both human
evolution and history of psychology would be used by modern psychologist.
Every story has a beginning and an end. To be able to understand the importance of modern...show more content...
They were full bipedal and their brain size and brain patterns evolved by increasing (590–687 cc). Their diet was mainly meat which might have an
influence on their rapid growth of their brains. (Tobias 1987).
The next species to appear were the Homo erectus which might have descended from Homo habilis. They were the first human whose fossils were
found outside of Africa. They also had larger brain than the species before them. Homo sapiens sapiens came after the Homo Neanderthalensis; they
are the only human species around. This could have been due to the result of increase brain sizes that allows more cognitive abilities that help them
adapt to different environment changes and hence survive. Global evidence have been found of art, music, and culture and advanced tool making. In
Mithen's 3 phase of mind proposes that the shape of the Neanderthals' frontal lobe was similar to the one of the modern Homo sapiens and this
indicated that they were able to cope with complex cognitive functioning. Evidence for this could be explained using the phonological approach by
Frank Gall (1758–1828).
Human evolution links with the history of psychology through Thomas Wynn's cognitive archaeology. Thomas Wynn (1979) wanted to find the link
between archaeology and psychology. He used Piaget's theory of development to argue that old humans had functional operational intelligence which
requires for

Essay on Evolution, Immortality, and Humanity
Our ancient ancestors in the Neolithic Era only lived for an average of 20 years, an age now considered to be only the beginning of adulthood. As
human technology becomes more sophisticated and knowledge of the ourselves and of nature expands, humans develop longer lifespans and the
general quality of life improves. In fact, we have more than tripled the lifespan of our ancestors while retaining much of the same biological fitness.
Humans have withdrawn from natural selection because technologies (not the evolution of the body) allow humans to adapt to the ever–changing
natural world. As a result, the biological evolution of the human physique has slowed significantly while the rest of nature continues the evolutionary
process. The human...show more content...
With further sophistication and refinement, humans maybe able to develop immunities to most, and hopefully all, of the diseases that have plagued
humans since the dawn of human existence and maybe even achieve immortality through biologically engineered cells that enable regeneration. This
possibility of escaping death, a fundamental element of the natural order, and of a continued, human–directed path of evolution will force humanity to
reinvent itself to fit the newly gained abilities that are once thought to be only possible in science fiction and fantasies.
Thus, with the technological breakthroughs in genomics and cell encapsulation that can potentially enhance the human body through internal implants
or alterations, humans will increasingly take control of the course of their evolution and fundamentally change humanity from its solely organic nature
to a state in which the natural and the artificial cooperate to function and evolve. First, this new course evolution brings about the expansion of the
definition of humanity beyond the established perception. Secondly, the potential immortality of mankind made possible by technology will lead to
disastrous problems of overpopulation that will upset the existing social structures. Lastly, the inevitable evolution of humanity will be either marked
by the gradual evolution of the entire human race or settled by a terrifying conflict between the Homo Sapiens, who are determined to preserve the
natural human essence, and

The Theory of Evolution Essay
Biological evolution is the name for the changes in gene frequency in a population of a species from generation to generation. Evolution offers
explanation to why species genetically change over years and the diversity of life on Earth. Although it is generally accepted by the scientific
community, Charles Darwin's theory of evolution has been studied and debated for several decades. In 1859, Darwin published On The Origin of
Species, which introduced the idea of evolutionary thought which he supported with evidence of one type of evolutionary mechanism, natural
selection. Some of the main mechanisms of evolution are natural selection, mutation, and genetic drift. The idea that all life on Earth shares a common
ancestor has been around for...show more content...
Over time the beak would become longer and those birds would survive. The next mechanism, genetic drift, happens by chance. For example, a bug
that is either red or green. If a large portion of the red bug happens to get stepped on, the gene frequency for this species is now changed. Mutation
is another evolutionary mechanism that happens by chance. Mutation is when the genetic material of an organism is altered. An example of this is
albinism which has altered the genes of several different animals. Evolution has been debated for many years. Most scientists assume evolution to be
true, but it is not officially proven. Evolution is known as "fact and theory," because it is a fact that organisms have changed over time, but the
mechanism that changes those organisms is uncertain. One of the major debates regarding evolution is the belief in creationism. Creationists believe
that the Universe and organisms on Earth were all created by a divine power. There are also some theories in which creationism and evolution
coexist. One idea is that the divine being who created the world used evolution as a method. Another idea is that science and religion are actually the
same thing and religion explains the unknown parts of science. For example, science says that the world couldn't have been created in seven days, but
one of God's days may not be the same length

Essay about Evolution
Charles Darwin had two great themes in "On the Origin of Species" which accounted for the similarities and adaptations
characteristic of living organisms. To account for the adaptations of organisms and those innumerable features that equip
them for survival and reproduction, Darwin (and Wallace) independently came up with the central theory of evolutionary
process: natural selection. Natural selection gives insight in to why organisms are the way that they are. Adaptations are
phenotypic variants that result in the highest fitness among a specified set of variants in a given environment. In reference
to humans, there are many traits that have been selected and adapted for throughout their evolutionary history giving...show more content...
These
ideas together constitute our idea of the evolutionary theory. When you factor in all of these elements of evolution you can
view evolution as a "progressive development through time from simple to gradually more complex and more diverse
organisms" (Ayala, 1997).
Darwin devoted one single sentence in "The Origin of Species" to the controversial topic of human evolution: "Light
will be thrown on the origin of man and his history"(Futuyma, 1998). Although his evasion did not work, human evolution
is still a controversial topic today. Since this area is so controversial there have been many studies conducted in the area
of human evolution. These evolutionary studies have provided us with abundant, well–documented evidence on the

relationship of humans to other species, on the steps by which some human characteristics evolved, and on genetic
variation within and among human populations.
Some theorists believe that natural selection of random changes in nucleic acid sequences and genetic information are
the primary agents of evolution. In a study done by J.L. Mountain and L.L. Cavalli–Sforza, it was shown that natural
selection may have played a major role in the evolution of certain polymorphisms in humans. It was found that the
frequencies of ancestral alleles of humans strengthen the conclusion that the earliest major separation of modern humans
was

Evolution And Evolution Of Evolution
Evolution
Evolution, a change in the genetic makeup of a subgroup, or population, of a species (Nowicki 10). Every living thing in the world is capable of
evolving into something. Cells evolve to perform different tasks and to become stronger. Charles Darwin is the founder of evolution, he realized that
species change over time to ensure survival. The future of evolution can not be predicted.
Everything in our universe starts out as a single celled organism. All life traces back to three billion years ago, therefor all species have had a long time
to evolve into what it is now.
Species evolve to ensure survival, to get a better sense of smell and eyesight. Some bugs have evolved to have a hard exoskeleton that can stand a
lot of pressure and won 't kill them. A duck has evolved to produce oils on its feathers that make them waterproof and keeps them dry and warm in
very cold water. They have also evolved to have webbed feet that makes it easy to swim through the water. The average household dog was once a
wild untamed animal. Over time the process of evolution has changed it into mans best friend. Some have evolved into great hunting dogs, others just
take naps all day. Their sense of smell, hearing, and sight are amazing but they didn 't get like that from the beginning, they evolved.
The importance of evolution helps us solve problems that impact our lives. An example of this is in the field of medicine, to stay ahead of pathogenic
diseases we must understand the

Argumentative Essay On Evidence Of Evolution
Jewels Hoeser
Dr. Tortorice
Anthropology 2346
September 10, 2015
Evidence of Evolution Evolution is a complex and at times controversial topic. The theory of evolution has been argued since it was first discovered
by Charles Darwin. Evolution has many misconceptions regarding how it came about and its process. The idea that there is an actual science to how
species evolved and continue to evolve is extraordinary. Evolution is a convoluted study that deals with the continuous transformation of organisms and
characteristics. According to Helena Curtis and N. Sue Barnes, "In fact, evolution can be precisely defined as any change in the frequency of alleles
within a gene pool from one generation to the next." (Talkorigins.com) Over the many years of Earth's existence, hundred upon thousands of creatures
and plants have evolved gradually over time creating new species. As the living–things transform, the characteristics and organisms evolve as well.
This transformation will continue just as it has in previous years. With this change, new and old species alike will adapt to their surroundings and
continue this never–ending cycle....show more content...
It is a fact that species evolve, just as it is a fact that the sun rises in the West and sets in the East. Helena Curtis and N. Sue Barnes voiced their opinion
on the evidence of evolution and the transformation of species, "massive additional evidence has accumulated supporting the fact of evolution––that all
living organisms present on earth today have arisen from earlier forms in the course of earth's long history." (Talkorigins.com)The discoverer of
evolutionary theory Charles Darwin, who suggested that evolution was similar to a tree and that new creations form on the branches of the tree and the
old creations fall away like dead limbs. Darwin's analogy went into further detail stating

Evidence For Evolution Essay
evolution is a biology thing you don't have to believe in it but it happened so dill with it.i'm going to tell you what evolution is based on what i've
searched up on it. During and since Darwin's time, people have been looking for and studying evidence in nature that teaches them more about evolution
. were used by Darwin to develop his theory of natural selection, and are still used today. Others, such as DNA testing, were not available in Darwin's
time, but are used by scientists today to learn more about evolution. Five types of evidence for evolution are discussed in this section: ancient
organism remains, fossil layers, similarities among organisms all others, such as DNA testing, were not available in Darwin's time, but are used by
scientists today to learn...show more content...
Thus, universal common ancestry entails the transformation of one species into another and, consequently, macroevolutionary history and processes
involving the origin of higher taxa. Because it is so well supported scientifically, common descent is often called the by biologists. For these reasons,
proponents of special creation are especially hostile to the macroevolutionary foundation of the biological sciences. This article dirThis article directly
addresses the scientific evidence in favor of common descent and microevolution.evolution, the overarching concept that unifies the biological sciences,
in fact embraces a plurality of theories and hypotheses. In evolutionary debates one is apt to hear evolution roughly parceled between the terms
"microevolution" and "macroevolution". Microevolution, or change beneath the species level, may be thought of as relatively small scale change in the
functional and genetic constituencies of populations of organisms. That this occurs and has been observed is generally undisputed by critics of
evolution. What is vigorously challenged,

Reflective Essay On Evolution
Do you find evolution as the right way to explain the starting of the universe? In my life, I was always taught that the world started with the Big
Bang and that there was no God in existence. My thoughts on this changed when I was in seventh grade, or last year. In seventh grade, I was taught
a diverse way of seeing things. My teacher explained to me the existence of a God as well as a new way of seeing the creation of the universe. He
explained that God created the universe in seven days by speaking words, contradicting the Big Bang. A short time later, he introduced me to a man
named Lee Strobel, an atheist who later became a Christian from the evidence of the existence of the Christian faith. Strobel interpreted the evidence of
God, the differences in evolution and Christianity, and how to have faith in God. In the first video that I watched with Lee Strobel, it referred to the
evidence of a creator or God. The video explained that God existed before the creation of man and the world. Continuing on the subject, the video
spoke about Jesus and his appearances to over five–hundred people. Jesus, referring to the trinity, includes the Father, the Holy Spirit, and Jesus
himself.Another part that I did not mention was that appearances were after his death on the cross. After his death on the cross, he rose from the
dead on the third day of his death. Another part of the evidence of God would be science. In science, there have been multiple evidences of the
existence of God. Examples of this would be references of dinosaurs in the Bible. In Job, it talks about a behemoth in Job forty. Another example would
be in Numbers of flying serpents that bit the Israelites. This is an example of how humans lived with dinosaurs and also that the world was not billions
of years, but only thousands of years, defining evolution. The first concept to understand between evolution and Christianity is that they see the world
completely differently. In Bible class, we mainly focused on the differences in Christianity and evolution. The main point is the age of the earth in both
Christianity and evolution. In evolution, they believe that the earth is about four–billion years in age. Christians are completely opposite and believe

Persuasive Essay On Evolution
Evolution has shaped many things into the way they are today, ranging from various animals to even parasites! However, to understand this, we must
know what evolution even is. Evolution is any change to the genetic composition of a population(Nova, xx). Evolution is not fixed or entirely random.
Through various tools like reading and comparing genetic codes, making phylogenetic trees, and observing physical traits, exploring and finding out
how homo sapiens have evolved is so interesting and easier than ever before! Homo sapiens have evolved from chimpanzees. In order for evolution
from chimpanzees to homo sapiens to happen, natural selection must take course. Natural selection is when "nature decides which organisms survive."
(Nova,n.d.). This happens through reproduction and variation. Consequently, there will be mutations in the organism's genetic code. This variation
usually is what helps the organisms to survive in different locations. Only the most reproductively successful will survive. For example, in a PBS
Learning Media course video, someone said that there was a theory that brown polar bears migrated to Antarctica, and they went through assorted
genetic mutations, and the bears who were able to survive became polar bears. To prove the natural selection between chimps and humans, we share
98% of our genetic code with chimpanzees. If we did not share 98% of our genetic code with them, we would have been further distantly related. In
addition to this, the

Essay about Evidence for Evolution
Evolution and DiversityвЂЁ
Evolution and DiversityThe foundation for the theory of evolution was laid by Charles Darwin (Rose, n.d.). He developed hypotheses about natural
selection which helped scientists develop the theory. Evolution is a theory and not a hypothesis because evolution has been proven by vast amounts of
scientific data, research, and testing. The definition of a hypothesis is an educated explanation that needs to be researched and tested but has not yet
been proven (Earman, 1984). There has been no scientific evidence to disprove the theory of evolution. The fossil record is evidence of evolution.
Fossils are often fingerprints of evolution. They help scientists track how species evolved...show more content...
Many die before they are born or hatched depending on species, while many others don't survive infancy and ultimately into their reproductive years.
A portion of those that reach reproductive age will never reproduce due to sterility or other factors. This is a part of thenatural selection process. It is
often referred to as the, "survival of the fittest" (Frederic, 2011). It is hard to truly estimate what fraction of offspring will survive to reproduction.
There are always obstacles to survival for an organism. Climate, food, habitat, and illness are just a few factors which affect natural selection.
Ultimately we know that some traits can increase survival rates for individuals such as their color. We know from Darwin's research that a certain
beak length was favorable in finches but that was also dependent on yearly weather (Petren, 2005). Offspring that possess favorable traits are more
capable of surviving into adulthood and thus reproducing. We know from genetics that there is an increased likelihood that their offspring would also
possess that desirable trait. The population of individuals possessing the trait would increase as more individuals possessing the trait survived to
reproductive years, and fewer without the trait did not. Natural selection can help prevent a species from going extinct if they were to face adverse
conditions that

Essay about Human Evolution and Adaptation
Over the course of evolution, humans have evolved to adapt the ever–changing conditions to improve their chances of surviving. Is there still room for
natural evolution or has the time come for us to use our technological innovations and further our development beyond previously thought possible by
biological means. Past trends have shown that as time has passed, significant body structures have changed to counteract the changes to our
environment. The changes that have been most significant are: dentation; brain size; muzzle angles; average body weight, skull structure. Will these
continue to change and progress along similar trend lines, or has the time come for the evolution of our species to become technologically driven?
As humans...show more content...
However as the planet warmed, natural selection may have started to favour a slighter stature in humans. Therefore, as the skeletons and skulls got
smaller the brain shrunk in size as a result (McAuliffe, 2011). Another theory that is circulating the science community is that the decrease in cranial
capacity is attributed to the arrival of agriculture
One theory is that H. sapiens have reached the end of the evolutionary line. As evolutionary changes have occurred, it is known that these changes
become fixed in isolated populations. For example, the Galapagos Finches that evolved from the mainland species to survive in the unique habitat of
the isolated islands. When natural selection occurs, a genetic mutation, e.g. spine suited to bipedal locomotion, is passed through the generations, as it
provides some benefit to the value of life of the organism. Eventually this mutated trait becomes the desired gene for further generations. However if the
populations where these mutations are occurring, the potential for significant mutations to take effect within the gene pool decreases as a result of
interbreeding between populations (Owen, 2009). As H. sapiens have become extremely mobile, as in they can cover large distances thanks to the
development of technological innovations, the possibility between crossbreeding between separate gene pools of different populations, the possibility
that a potentially beneficial mutation can become the desired gene is

The Future Of Human Evolution Essay

Recommended

Recommended

More Related Content

More from Need Help Writing My Paper Frostburg

More from Need Help Writing My Paper Frostburg (18)

Recently uploaded

Recently uploaded (20)

The Future Of Human Evolution Essay