Question 1
If a female mammal (abnormally) has three X chromosomes, how many active X chromosomes would each of her cells have?
◦ None
◦ One
◦ Two
◦ Three
◦ The number would vary from cell to cell.
Question 2
Imprinting is a term used to describe:
◦ the specific pattern of methyl groups on DNA, which influences activity of an allele.
◦ the specific pattern of acetyl groups on DNA, which influences activity of an allele.
◦ the specific pattern of methyl groups on histones, which influences chromatin activity.
◦ the specific acetylation pattern on histones, which influences chromatin activity.
◦ the specific phosphorylation pattern on histones, which influences chromatin activity.