Sexual reproduction involves the combination of genetic material from two individuals to produce offspring and generate genetic variation between generations more slowly than if DNA copying was completely accurate. It avoids the problem of exponential growth of DNA levels over generations that would occur if each offspring received doubled DNA from a single parent. Sexual reproduction requires a male and female to contribute genetic material, with the female's larger egg and womb allowing for internal fertilization and development of offspring in many species including humans.
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*I won an Award for the Best Power Point Project Presentation in class 12th for this project. :D
Name 2 difference between RNA and DNA What happens is there is no in.pdfdhavalbl38
Name 2 difference between RNA and DNA What happens is there is no interphase in mitosis?
What is the ploidy of the daughter cells in mitosis? Where does fertilization take place? What is
the ploidy of a gamete? What is a fertilized egg called? Can a pregnant woman have a normal
cycle? What is Gregor Mendel\'s Law of Segregation? What is Mendel\'s Law of Independent
Assortment? What is Gregor. Mendel\'s Law of Dominance?
Solution
9.(a)RNA is single stranded while DNA is double stranded.
(b)RNA comprises of a Ribose sugar whereas DNA comprises of Deoxyribose sugar.
10.Interphase and mitosis are 2 different events,but they are connected in some way.If there is no
interphase, will lead to no DNA replacation,no organelle replication, and thus no mitosis.
12.In humans,fertilisation takes place in fallopian tubes,which is near to ovary.
13.Human diploid cells and haploid gametes have 46 and 23 chromosomes respectively.
14. A fertlised egg is called zygote.
15.No,menstruation cycle will not produce any bleeding at time of pregnancy.
16.When sperm and egg unite at fertilization, each contributes its allele, restoring the paired
condition in the offspring. This is called the Law of Segregation. Mendel also found that each
pair of alleles segregates independently of the other pairs of alleles during gamete formation.
17.Law of independent assortment states that when two or more characteristics are inherited,
individual hereditary factors assort independently during gamete production, giving different
traits an equal opportunity of occurring together.
18. Mendel\'s third law (also called the law of dominance) states that one of the factors for a pair
of inherited traits will be dominant and the other recessive, unless both factors are recessive.
questions. How did semiconservative and Stahl s experiments support .pdfarorasales234
questions. How did semiconservative? and Stahl s experiments support the idea that DNA
replication is 2. A new form of DNA is discovered that appears to be able to replicate itself both
in the 3\' 5\' direct and in the sequence direction. If this is true, how would newly on replication
differ from DNA replication as we this discovered DNA know it? 3. Amazingly, an alien species
of cellular organism is found alive in the remains of a meteorite that landed in the Mojave
Desert. As a scientist, you are trying to determine whether this alien life-form uses DNA,
protein, or some other type of compound as its hereditary material a. What kinds of experiments
would you propose to determine what the hereditary material b. If the hereditary material tums
out to be similar to our DNA, describe the simplest experiments you could run to try to
determine if is double-stranded like our DNA, triple-stranded, or some other configuration.
Copyright 2014 Pearson Activity 15.3 Inc.
Solution
Answer to question 1
Nitrogen is one of the major constituent of DNA. 14N is by far the most abundant isotope of
nitrogen, but DNA with the heavier 15N isotope is also functional.
E. coli was grown for several generations in a medium containing NH4Cl with 15N. When DNA
is extracted from these cells and centrifuged on a salt density gradient, the DNA separates out at
the point at which its density equals that of the salt solution. The DNA of the cells grown in 15N
medium had a higher density than cells grown in normal 14N medium. After that, E. coli cells
with only 15N in their DNA were transferred to a 14N medium and were allowed to divide.
DNA was extracted periodically and was compared to pure 14N DNA and 15N DNA. After one
replication, the DNA was found to have intermediate density. Since conservative replication
would result in equal amounts of DNA of the higher and lower densities (but no DNA of an
intermediate density), conservative replication was excluded. However, this result was consistent
with both semiconservative and dispersive replication. Semiconservative replication would result
in double-stranded DNA with one strand of 15N DNA, and one of 14N DNA, while dispersive
replication would result in double-stranded DNA with both strands having mixtures of 15N and
14N DNA, either of which would have appeared as DNA of an intermediate density.
Meselson–Stahl continued to sample cells as replication continued. DNA from cells after two
replications had been completed was found to consist of equal amounts of DNA with two
different densities, one corresponding to the intermediate density of DNA of cells grown for only
one division in 14N medium, the other corresponding to DNA from cells grown exclusively in
14N medium. This was inconsistent with dispersive replication, which would have resulted in a
single density, lower than the intermediate density of the one-generation cells, but still higher
than cells grown only in 14N DNA medium, as the original 15N DNA would have be.
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DNA is a highly complex, intricate and extraordinary macromolecule found within all living cells. DNA is a "biochemical noun" and can be defined as "...a self- .... In other words, DNA refers to the molecules inside cells that carry genetic information and pass it from one generation to the next. The scientific name for DNA .... Free Essays from 123 Help Me | acid (DNA) is a molecule, a material rather, that is present in almost all living organisms. It is self-replicating and is .... 17. 2. 2022 ... Dna is the genetic fabric which is present in all the cells of the body. This molecule present a few characteristics, as VNTR, special present .... 24. 4. 2020 ... Genetic ancestry testing holds the potential to identify the geographic origins of an individual's ancestors, ancestral lineages, and relatives, .... 25. 4. 2022 ... 2022 DNA Day Essay Contest: Full Essays · 1st Place: Man Tak Mindy Shie, Grade 12. Teacher: Dr. Siew Hwey Alice Tan School: Singapore .... DNA, or Deoxyribonucleic acid, is two self replicating biopolymer strands that contain biological information that is necessary for human life. DNA is what .... DNA, also known as deoxyribonucleic acid, is a genetic information-carrying molecule that is essential for the development, growth, and reproduction of all .... DNA stand for deoxyribonucleic acid. RNA stands for ribonucleic acid. They share some similarities, such as both being nucleic acids.. Free Essay: The Structure and Replication of DNA Introduction The ... The enzyme polymerase is used to add new nucleotides to the growing DNA strands.
11. Forensic scientists use biotechnology techniques ti identify cri.pdfannaielectronicsvill
11. Forensic scientists use biotechnology techniques ti identify criminals. Every individual has
unique DNA and helps indentifying people involved in crime. DNA can be isolated from a wide
range of evidence left at crime place. DNA finger printing is the method of identifying spcific
person. This technique uses a specific type of DNA sequence called microsatellite. From DNA
sample short tandem repeats (STRs) will be isolated by PCR, they separate them on the basis of
size and compare them to the size of STRs in another sample. They will compare the sequences
and identify criminals.
12. Cloning is a process of producing similar populations of genetically identical individuals.
The steps involved are transfer of nucleus from donare adult cell to an egg from which the
nucleus has been removed or to a cell from a blastocyst from which the nucleus has been
removed. If the egg divides normally it will be transfered into uterus of a surrogative mother.
Such clones may not be strictly identical. Donar embryo will be splitted into two and then can be
transferred by embryo transfer. It can give rise ti identical twins.
From one cell of an animal genetic information will be removed and this will be placed in an
unfertized egg in which its own DNA is removed. This egg will be artificially stimulated to
develop into embryo and will be placed into surrogative mother.
In Fifi from one cell DNA will be removed and it will be placed in an unfertized egg of another
animal where its own DNA will be removed. This will be stimulated artificially to develop into
embryo and this will be placed into surrogative mother.
Solution
11. Forensic scientists use biotechnology techniques ti identify criminals. Every individual has
unique DNA and helps indentifying people involved in crime. DNA can be isolated from a wide
range of evidence left at crime place. DNA finger printing is the method of identifying spcific
person. This technique uses a specific type of DNA sequence called microsatellite. From DNA
sample short tandem repeats (STRs) will be isolated by PCR, they separate them on the basis of
size and compare them to the size of STRs in another sample. They will compare the sequences
and identify criminals.
12. Cloning is a process of producing similar populations of genetically identical individuals.
The steps involved are transfer of nucleus from donare adult cell to an egg from which the
nucleus has been removed or to a cell from a blastocyst from which the nucleus has been
removed. If the egg divides normally it will be transfered into uterus of a surrogative mother.
Such clones may not be strictly identical. Donar embryo will be splitted into two and then can be
transferred by embryo transfer. It can give rise ti identical twins.
From one cell of an animal genetic information will be removed and this will be placed in an
unfertized egg in which its own DNA is removed. This egg will be artificially stimulated to
develop into embryo and will be placed into surrogat.
Embracing GenAI - A Strategic ImperativePeter Windle
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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.
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Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
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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.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
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ppt
1. We all are familiar with modes of
reproduction
That depended on the involvement of two
individual before a new generation can be
created .
2. Sexual mode of reproduction
While DNA copying mechanism are not absolutely accurate, they are precise
enough to make the generation for variation a fairly slow process . If the DNA
copying mechanism were to be less accurate many of the resultant DNA copies
would not be able to work with cellular apparatus and would die.
Thus two different individual in a population would have quite different
pattern of accumulated variation.
3. DNA DNA
creates a major difficulty . If each new generation is to be the combination of
DNA copies from to pre-existing individuals, then each new generation will
be end up having twice the amount of DNA that the cellular apparatus by
the DNA. Besides, if each generation doubles its DNA, fairly soon there will be
only DNA on earth with no room for anything else.
