Indicate whether each of the following histone modifications is generally associated with active genes (A) or silenced genes (S). Your answer would be a four-letter string composed of letters A and S only, e.g. SSAS.
( ) H3 lysine 9 acetylation
( ) H3 serine 10 phosphorylation
( ) H3 lysine 4 trimethylation
( ) H3 lysine 9 trimethylation

Question

Indicate whether each of the following histone modifications is generally associated with active genes (A) or silenced genes (S). Your answer would be a four-letter string composed of letters A and S only, e.g. SSAS.
( )	H3 lysine 9 acetylation
( )	H3 serine 10 phosphorylation
( )	H3 lysine 4 trimethylation
( )	H3 lysine 9 trimethylation

Quizplus · Accepted Answer

Acetylation of lysine 9, phosphorylation of serine 10, and trimethylation of lysine 4 in histone H3 are associated with active genes. Trimethylated lysine 9 in this histone, however, is a mark associated with silenced genes.

Indicate Whether Each of the Following Histone Modifications Is Generally