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

Answer and explanation

Correct answer: They can change trait frequencies in separated groups

The governing concept is that speciation develops when populations become genetically different enough to form separate species. Genetic drift changes allele frequencies by chance, especially in small or isolated populations, whereas natural selection increases heritable traits that improve survival or reproduction in a particular environment. Over many generations, these changes can reduce gene flow and produce reproductive isolation. Therefore, option A is correct; the other options incorrectly describe gene loss, prevention of reproduction, or acquired traits.

Related tags

Genetic DriftNatural SelectionSpeciationEvolution And SpeciationHeredity And EvolutionScienceClass 10 Mcq

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