Question

Describe how population with substantial genetic
differences can be formed. What is the role of
natural selection in it?​

Answer 1

Answer:

Natural selection is the evolutionary process by which favourable heritable traits become more common in successive generations of a population of reproducing organisms. Unfavourable heritable traits become less common.

Answer 2

Answer:

Variation allows some individuals within a population to adapt to the changing environment. Because natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation. Some new alleles increase an organism’s ability to survive and reproduce, which then ensures the survival of the allele in the population.

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