Calico cats are never male because:
A) recessive genes are not usually expressed on their X chromosome.
B) male hormones prevent expression of the calico phenotype.
C) two different X chromosomes are needed for the expression of the calico phenotype.
D) two different Y chromosomes are needed for the expression of the calico phenotype.
E) one X chromosome and one Y chromosome are needed for the expression of the calico phenotype.

Question

Quizplus · Accepted Answer

Calico cats have a coat color pattern that requires two different alleles located on the X chromosome. Since males typically have only one X chromosome (XY), they cannot have the two different alleles needed to express the calico phenotype.

Calico Cats Are Never Male Because