Answer
The correct answer is option c.
Work Step by Step
\ltThe gamete of a horse would have half the diploid chromosome number; therefore, if a horse's diploid chromosome number is 64, then the gamete would have 32 chromosomes.
The gamete of a donkey would have half the diploid chromosome number; therefore, if a donkey's diploid chromosome number is 62, then the gamete would have 31 chromosomes.
The mule embryo would combine the 32 chromosomes of the horse gamete and the 31 chromosomes of the donkey gamete, resulting in a total of 63 chromosomes for the mule.
The correct answer is option c.
