Discuss mechanisms of evolution.

1.	Discuss mechanisms of evolution.
Answer» Genetic variation is the raw material of evolution. Individuals within the populations differ in morphological, behavioral and biochemical traits, many of which are under genetic control. Genetic variation provides the raw material on which evolution can work. Evolution can be summarized as a three step process : Mutations and genetic rearrangements caused by recombination occur at random. These random events then generate inherited differences in the characteristics of individuals in populations. Finally, mutation, gene flow, genetic drift and natural selection can cause allele frequencies to change over time. Of the four mechanisms of evolutionary change, mutation, gene flow and genetic drift are influenced by chance events, while, natural selection is a random process.

Answer»

Genetic variation is the raw material of evolution. Individuals within the populations differ in morphological, behavioral and biochemical traits, many of which are under genetic control. Genetic variation provides the raw material on which evolution can work.

Evolution can be summarized as a three step process :

Mutations and genetic rearrangements caused by recombination occur at random.
These random events then generate inherited differences in the characteristics of individuals in populations.
Finally, mutation, gene flow, genetic drift and natural selection can cause allele frequencies to change over time.
Of the four mechanisms of evolutionary change, mutation, gene flow and genetic drift are influenced by chance events, while, natural selection is a random process.

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Discuss mechanisms of evolution.

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