Which of the following is a reproductive isolating mechanism that results in the incompatibility of sperm and egg?

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Gametic isolation

Ecological isolation

Behavioral isolation

Temporal isolation

answer is A.

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Detailed Solution

The correct answer is Gametic isolation. Gametic isolation is a prezygotic barrier that prevents different species from mating because their gametes cannot interact with each other. It occurs when the sperm and egg of two different species are not compatible, and fertilization cannot occur. Thus, gametic isolation is a reproductive isolating mechanism that results in the incompatibility of sperm and egg.

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