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A Horse Has a Diploid Number (2n) of 64 and a Donkey

Question 83

Multiple Choice

A horse has a diploid number (2n) of 64 and a donkey has 2n = 62. The hybrid of these two species, mules, have 2n = 63 and are sterile. Why are mules sterile?


A) Mules are not true hybrids.
B) One chromosome is unpaired and fails to divide properly during meiosis.
C) Horses are not able to form new species.
D) Mules cannot physically mate with each other.
E) Mules cannot physically mate with horses and donkeys.

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