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Histone Modifications

APBIO-EGFEK8

Histone proteins have tails that protrude out from a nucleosome. These can be methylated, causing chromatin to pack more tightly together, or acetylated, promoting a loose chromatin structure.

Which of the following could a researcher expect to find when examining the histones of inactivated X chromosomes?

A

A variable amount of methylation and acetylation.

B

No methylation or acetylation because the chromosome is inactive.

C

A high amount of acetylation.

D

A high amount of methylation.