5. The story of the horse and the donkey is more complicated than it first ap di

Question

5. The story of the horse and the donkey is more complicated than it first ap discovered that although a male donkey and a female horse can almost a horse and a female donkey rarely produce offspring (C appears. It has been lways produce a mule, a male alled a hinny). Which of the following would e most likely to account for the inability of a male horse and a female donkey to produce an offspring? a. They are not the same phylogenetic species b. Postzygotic hybrid inviability c. Postzygotic hybrid sterility d. Prezygotic temporal isolation e. Postzygotic hybrid breakdown

Explanation / Answer

Postzygotic hybrid sterility

Post zygotic hybrid sterility entails that the fertilization among the two takes place successfully, a zygote is formed which is viable but however the the offspring is unable to produce its own offspring i.e. lacks vigour and is sterile.

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