Test: Genetics

1.

Females have two X chromosomes, while males have only one. Most of the genes on the X chromosome, however, are expressed at the same level in both females and males. Which of the following statements regarding X chromosomes is correct?

XIST RNA coats one copy of the X chromosome in females

The nuclei of cells in males contain Barr bodies.

Calico cats are almost always males.

Female homozygotes are mosaics.

1/12 questions

0%
Learning Tools by Varsity Tutors