what molecules are made in the heterochromatin
You won't believe these 10 facts about people. Euchromatin is a substance composed of DNA and protein molecules that makes up the bulk of material within a mammalian cell nucleus.It is one particular type of chromatin that is distinguished from heterochromatin both by its function and location.ou won't believe these 10 facts about people. Euchromatin is a substance composed of DNA and protein molecules that makes up the bulk of material within a mammalian cell nucleus.