In which of the following mechanisms fertile offsprings are not produced as a result of mating between groups?

Geographical isolation

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Mechanical isolation

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Temporal isolation

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Hybrid sterility

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Behavioral isolation

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Both C and D

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Solution

The correct option is F Both C and D
Abnormal distributions to the gametes of whole chromosomes, chromosome segments or combinations of genes lead to hybrid sterility. Geographical, mechanical, temporal and behavioral isolations are pre zygotic barriers and prevent mating between groups by one or other means and hybrid is not produced. Thus, the correct answer is D.

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