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Does genetic drift lead to evolution?
Yes. Genetic drift-- the change in allelic frequencies of a population due to chance-- can play a major role in evolution. The effects of drift are most pronounced in small, isolated populations. Drift can bring alleles to fixation very quickly in such populations, and can lead to genetic differentiation between them, possibly contributing to speciation.
Is the process of evolution most commonly seen as a rapid change in the characteristics of an individual organism?
No, evolution is typically regarded as a slow and gradual change in the genetic makeup of a population over many generations. It is not seen as a rapid change in the characteristics of an individual organism.
What are the mechanisms of evolution?
There are several mechanisms for evolution. The first (and most important) being natural selection, which plays off random mutations. Genetic drift is also another important aspect of evolution. EDIT: It depends on what you mean by "mechanism." Mutations are thought to be the mechanism that causes the change in DNA, then natural selection and Gentic drift take over. Unfortunately, mutations do not hold up and evolution is ultimately left without a mechanism. This article on mutations gives an indepth explanation http://www.answersingenesis.org/articles/wow/are-mutations-the-engine STRAIT FROM THE BIOLOGY BOOK :)
What does evolution mean in science?
Evolution is the gradual change of a population in response to changes in the environment. Evolution does not occur in individuals, it can only occur when a mutation is added to a population or a certain gene is selected for. Evolution occurs because the fittest individuals who pass their genes on the most are the ones best suited for the environment. Those that don't survive don't pass on their traits. It is important to note that fitness described in survival of the fittest pertains to reproductive fitness, not physical fitness.
How is modern genetics evidence of evolution?
Evolution is the change in allele frequency over time in a population of organisms. One of the most important things modern genetics can do is observe this fact of nature by modern evolutionary genetic sequencing of many population genomes.
Does genetic drift lead to evolution?
Yes. Genetic drift-- the change in allelic frequencies of a population due to chance-- can play a major role in evolution. The effects of drift are most pronounced in small, isolated populations. Drift can bring alleles to fixation very quickly in such populations, and can lead to genetic differentiation between them, possibly contributing to speciation.
Is the process of evolution most commonly seen as a rapid change in the characteristics of an individual organism?
No, evolution is typically regarded as a slow and gradual change in the genetic makeup of a population over many generations. It is not seen as a rapid change in the characteristics of an individual organism.
Compare and contrast natural selection and evolution?
Natural selection is the most powerful driver of evolution and it is the only mechanism of evolution ( genetic drift and gene flow are two other mechanisms ) that leads to adaptive change. Natural selection is the nonrandom survival and reproductive success of of randomly varying organisms. Evolution is the change in allele frequency over time in a population of organisms.
Evolution requires that molecules and atoms will assemble themselves into?
Evolution requires that molecules and atoms will assemble themselves into the molecules that all living creatures have. The most important would be DNA and RNA which itself is make from nucleic acids.
What are the mechanisms of evolution?
There are several mechanisms for evolution. The first (and most important) being natural selection, which plays off random mutations. Genetic drift is also another important aspect of evolution. EDIT: It depends on what you mean by "mechanism." Mutations are thought to be the mechanism that causes the change in DNA, then natural selection and Gentic drift take over. Unfortunately, mutations do not hold up and evolution is ultimately left without a mechanism. This article on mutations gives an indepth explanation http://www.answersingenesis.org/articles/wow/are-mutations-the-engine STRAIT FROM THE BIOLOGY BOOK :)
What does evolution mean in science?
Evolution is the gradual change of a population in response to changes in the environment. Evolution does not occur in individuals, it can only occur when a mutation is added to a population or a certain gene is selected for. Evolution occurs because the fittest individuals who pass their genes on the most are the ones best suited for the environment. Those that don't survive don't pass on their traits. It is important to note that fitness described in survival of the fittest pertains to reproductive fitness, not physical fitness.
How is modern genetics evidence of evolution?
Evolution is the change in allele frequency over time in a population of organisms. One of the most important things modern genetics can do is observe this fact of nature by modern evolutionary genetic sequencing of many population genomes.
Why genetic code are universal?
This is most simply answered by evolution. If the theory of evolution is correct, all organisms on Earth developed from the same origins. This means that genetic coding would remain the same because therer was no reason to change it. Nature will only allow mutations slowly and those mutations will only continue to exist if the organism with them survives long enough to reproduce.
What is the most important single factor necessary for creating diversity of life?
The most important single factor necessary for creating diversity of life is genetic variability. This variability allows for the adaptation of species to different environments, leading to the evolution of diverse life forms.
Meiosis and fertilization are important processes because they may most immediately result in?
the formation of genetically diverse offspring. Meiosis leads to the formation of haploid gametes with unique genetic combinations, which when fertilized by another gamete, creates a genetically diverse zygote through recombination. This genetic diversity is crucial for evolution and adaptation in species.
Why is the neocortex important to evolution?
Neocortex is the region of brain only present in mammals , and most highly developed in humans , it is involved in all higher brains hence it is most important in mammalian evolution .
What is the method that most plants reproduce?
Vegetative reproduction is most common in plants, however, sexual reproduction is the essence of evolution as it brings genetic recombination.
