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How can genetic drift and natural selection together contribute to speciation?

Answer and explanation

Correct answer: They can change trait frequencies differently in separated populations

The governing concept is divergence caused by both random and non-random evolutionary forces. Genetic drift changes allele frequencies by chance, especially in small isolated populations. Natural selection changes them because some heritable traits improve survival or reproduction in a particular environment. Acting differently in separate populations, these forces can build genetic and phenotypic differences. If reproductive isolation develops, speciation may result. Thus A is correct; B, C, and D are false.

Related tags

Genetic-DriftNatural-SelectionSpeciationEvolution And SpeciationHeredity And EvolutionScienceClass 10 Mcq

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