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A male from species A mates with a female from species B. Male A’s sperm swims and finds the egg, but the sperm is unable to penetrate the egg. This is an example of

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helenaguzman74

Answer: Gametic isolation

Explanation:

Sperm of one species may not be able to fertilize the eggs of another species. For instance, sperm may not be able to survive in the reproductive tract of females of the other species, or biochemical mechanisms may prevent the sperm from penetrating the membrane surrounding the other species' eggs