This document discusses key concepts of evolution through natural selection including overpopulation, variation, survival of the fittest, and the formation of new species. It explains how organisms tend to overproduce offspring leading to competition over limited resources. Individuals within a population vary in traits and advantageous variations increase the chances of survival and are passed on, known as survival of the fittest. Over time, inheritance of advantageous traits can lead to the evolution of new species through adaptive radiation.
theories of evolution by Lamark and Darwin.pptxUOP
This presentation consists of theories of mechanism of evolution defined by Lamark and Darwin that gives an idea about how evolution took place and how organisms evolved in nature. Also it gives a very good idea about natural selection and survival of the fittest. This pptx will give u an idea about the adaptation of organisms to their environment and the survival of the fittest.
theories of evolution by Lamark and Darwin.pptxUOP
This presentation consists of theories of mechanism of evolution defined by Lamark and Darwin that gives an idea about how evolution took place and how organisms evolved in nature. Also it gives a very good idea about natural selection and survival of the fittest. This pptx will give u an idea about the adaptation of organisms to their environment and the survival of the fittest.
its deals with the general basic ideas of gene and evolutions.different types of examples are used to explain the gene and evolutions.the origin of basic genetics and their ideas are also formulated in this presentation
Darwin argued that sexual selection play important role in evolution. He put females in very powerful evolutionary role. Sexual selection is different from natural selection, as Darwin made very clear: sexual selection arises from difference in mating success and natural selection is due to variance in all other fitness component. Sexual selection is two type: inter sexual selection and intra-sexual selection. Inter selection means evolution of arms for fighting and intra-selection means female attracted to costly traits i.e. long tail, bright color etc.
its deals with the general basic ideas of gene and evolutions.different types of examples are used to explain the gene and evolutions.the origin of basic genetics and their ideas are also formulated in this presentation
Darwin argued that sexual selection play important role in evolution. He put females in very powerful evolutionary role. Sexual selection is different from natural selection, as Darwin made very clear: sexual selection arises from difference in mating success and natural selection is due to variance in all other fitness component. Sexual selection is two type: inter sexual selection and intra-sexual selection. Inter selection means evolution of arms for fighting and intra-selection means female attracted to costly traits i.e. long tail, bright color etc.
At the Oxford Biodiversity Institute Symposium on 2-3 October 2013, Bioversity International Programme Leader Ehsan Dulloo presented on the importance of genetic diversity for building resilience for crops. Learn more: http://www.bioversityinternational.org/research-portfolio/conservation-of-crop-diversity/
Darwinism and natural selection 7th zol.pptximranrohi56
Darwin's three main principles of natural selection state that, in order for the process to occur, most characteristics in the population must be inherited, more offspring must be produced than can survive, and the fittest offspring must be more likely to survive and reproduce.In the mid-19th century, a man came up with a very powerful idea, the idea that species could change. Today, all the time, we hear about animals adapting, endangered species going extinct, viruses mutating. But in the 1800s, people conceptualized a much more static world. One man looked past all that. His name was Charles Darwin.
Darwin called his idea the theory of natural selection. Natural selection is defined as a natural process that results in the survival and reproduction of organisms with genetic traits best suited to their environment. A shorter (but no less accurate) definition might be "survival of the fittest." Within any population, the fittest individuals, or the ones who fit the environment best, usually survive and reproduce, passing on their genetic traits to future generations.
Overview
In simpler terms, Evolutionary Genetics is the study to understand how genetic
variation leads to evolutionary change.
Evolutionary Genetics attempts to account for evolution in terms of changes in gene
and genotype frequencies within populations and the processes that convert the
variation with populations into more or less permanent variation between species.
The central challenge of Evolutionary Genetics is to describe how the evolutionary
forces shape the patterns of biodiversity.
Evolutionary Genetics majorly deals with;
a. Evolution of genome structure
b. The genetic basis of speciation and adaptation
c. Genetic change in response to selection within populations
this ppt traces the evolutionary history of humans and presents the description of evolution on the basis of various theories put forward by various eminent scientists
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Instructions for Submissions thorugh G- Classroom.pptx
Natural selection
1.
2. “Survival of the Fittest”
Selection for traits that are most successful in current environment
A constant process – environments change and therefore so do
factors that determine success
3. Darwin proposed that
organisms descend from
common ancestors and change
with time, diverging from the
original common form
This causes the evolution of
new species
5. Organisms tend to produce
many offspring – more than
the environment can support
Organisms will reproduce
until something stops them
(usually food)
6. •Because of overpopulation, individuals compete with one another over
limited resources food, water, shelter, mates
•Competition occurs both within and between species
7. •Individuals of a population vary in their traits and characteristics
•This variation is passed on to offspring.
9. New species results by
inheritance of trait(s), on
genes, that give them another
advantage over others
New species evolve!
10. Where one species evolves into one or more other species
Also called ADAPTIVE RADIATION
11. An inheritable characteristic that provides an advantage for
survival and reproduction.
Adaptations can be:
1. Structural – a part the organism has to help it survive
Ex: Speed, camouflage, claws, quills, etc.
2. Physiological – a metabolic or chemical adaptation to help it survive
Ex: ability to maintain internal temperature; use less water for photosynthesis; produce a
poisen
3. Behavioral – something the organism does to help it survive
Ex: Migration; solitary vs. herds; flying in formation
13. Alleles exist with a certain frequency in populations of organisms
The available genes and alleles in a population are called the “gene pool”
14. Changes in the structure of genes introduce new alleles to populations and disrupt
equilibrium
Not all mutations are good, many are fatal
This is the source of all new alleles
15. Preference for a particular allele will increase its frequency in a population over
generations
Selection can happen in three different ways
16. 1. If the environment favours the average of the distribution, the selection is
called stabilizing selection
17. 2. If the environment
favours one extreme, the
selection is directional
18. 3. If the environment favours both extremes, the selection is disruptive
19. Mutations: The Science of Survival
https://www.youtube.com/watch?v=qVmusHZtQms (Darwin & Natural Selection)
20:00 to 29:29 (part 3?)