Chimpanzees,gorillas,and Orangutans Have DNA Sequences That Are Almost Identical to Those

Multiple Choice

Chimpanzees,gorillas,and orangutans have DNA sequences that are almost identical to those of humans; however,these genes are found on 24 pairs of chromosomes in apes,while humans have 23 pairs.The C2 chromosome in humans is a large chromosome with similar banding pattern and DNA sequences to two smaller chromosomes in apes (C2 and C4) .In addition it appears to have both a vestigial second centromere and telomere sequences in the middle of the strand.
-Why do,in general,do only female cats have the tortoiseshell phenotype?

A) a male inherits only one allele of the X-linked gene controlling hair color
B) the Y chromosome has a gene blocking orange coloration
C) only males can have Barr bodies
D) multiple crossovers on the Y chromosome prevent orange pigment production
E) two tortoiseshell genes located on the X chromosome are required