1.) In your own words, what is Dnmt1 and what does it do?
2.) In your own words, what is Dnmt3a and 3b, and what do they
do?
3.) Identify two distinct ways that DNA methylation regulates
gene expression. One way is related to histone modifications, the
other way is not.
Under Regulating X Inactivation
4.) Describe how DNA-methylation and histone modifications play
a role in X-chromosome inactivation.