Question 20

(Multiple Choice)

In what ways do human X and Y chromosomes differ from one another?


A)The X chromosome is larger than the Y chromosome.
B)The X chromosome has about 1000 genes and the Y chromosome only about 50.
C)The X chromosome is found only in females, while the Y chromosome is found only in males.
D)The X and Y chromosomes have no regions in common and do not pair during meiosis.

Answer