Question

Explain how natural selection can lead to evolution.

Answer 1

Answer:

Genetic variation is an important force in evolution as it allows natural selection to increase or decrease the frequency of alleles already in the population. Genetic variation can be caused by the mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring). Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.

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Answer 2

Answer:

A shorter response than the one above me is: When the environment changes, organisms best suited for the new environment survive and reproduce. This allows the favorable adaptation to be passed on to the next generation. Over time, more and more organisms will have the favorable adaptation, and the population will evolve.

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