Ch 21 N 22 frq - Sasha Preston Period 4 Chapter 21 22 Free Response Questions 1 a As presented by Charles Darwin the theory of natural selection can be

Ch 21 N 22 frq - Sasha Preston Period 4 Chapter 21 22 Free...

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Sasha Preston Period 4 Chapter 21 & 22 Free Response Questions 1. a) As presented by Charles Darwin, the theory of natural selection can be described by the process in which individuals that have certain heritable traits survive and reproduce at a higher rate than the individuals who do not share this advantageous trait, and are therefore less likely to survive and pass on their traits. This process may occur under many conditions, such as if there is an environment change. Through natural selection, certain members of the said species will be able to survive these new changes and pass on the genes that allowed them to survive to their offspring. Meanwhile, those that are unable to survive due to their lack of advantageous traits die out. Darwin also made it a point to note that individuals do not evolve; the smallest unit of evolution is a population, which occurs over time. b) Natural selection can be observed under many different conditions. For example, convergent evolution can be seen among species that inhabit the same biome. Even the most unrelated species living together in the similar locations over a long period of time may develop similar analogous structures. For instance, the
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