Which of the following form(s) a Barr body?
a. one of the X chromosomes in a female cell
b. one of the Y chromosomes in a male cell
c. one of the X chromosomes in a male cell
d. both of the X chromosomes in a female cell
Answer: a
a. one of the X chromosomes in a female cell
b. one of the Y chromosomes in a male cell
c. one of the X chromosomes in a male cell
d. both of the X chromosomes in a female cell
Answer: a