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27 September, 05:49

Which of the following is a postzygotic isolating barrier?

A. The genitalia of a male duck do not fit properly with the genitalia of females of another population

B. Females from one kind of fly are not attracted to the buzz of another kind of male

C. Two species of bats breed in different habitats

D. The hybrid offspring of two species of crocodiles can produce normal gametes but cannot obtain a mate

E. Hybrid offspring of two species of crocodile have higher fitness than either of the parental species

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  1. 27 September, 06:12
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    Answer: The following is a postzygotic isolating barrier:

    The hybrid offspring of two species of crocodiles can produce normal gametes but cannot obtain a mate.

    Explanation:

    Reproductive isolation occurs when barriers prevent two populations from interbreeding, keeping their gene pools separate.

    We can find the Prezygotic isolation that occurs before fertilization can happen.

    And the Postzygotic insolation barriers are the reproductive insulation processes that act after the mating. They are all that concern the viability of the individuals produced.

    Prezygotic isolation barriers can be temporal, behavioural, geographic, ecological or mechanical; whereas postzygotic isolation barriers include the inviability, infertility or breakdown of hybrid organisms
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