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Which example shows the combined effect of heritable variation and natural selection?

Answer and explanation

Correct answer: Dark-coloured insects survive better in polluted areas and leave more offspring

This example illustrates natural selection only when colour differences already occur and are heritable. In a polluted habitat, dark insects may be less visible to predators, so they survive and reproduce more successfully. Their offspring can inherit the colour tendency, causing the trait to become more common over generations. Therefore option A combines variation, differential survival, reproduction, and inheritance. B confuses acquired features with inheritance, while C and D are biologically unrelated.

Related tags

Industrial MelanismNatural SelectionHeritable VariationHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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