Heterochromatin Differs from Euchromatin in That Heterochromatin

Heterochromatin differs from euchromatin in that heterochromatin

A) is transcriptionally active, whereas euchromatin is not.
B) is not found in Barr bodies.
C) is transcriptionally inactive.
D) is the result of the unpacking of euchromatin.
E) contains DNA with accessible promoters. Heterochromatin is highly condensed chromatin that is transcriptionally inactive, because promoters are inaccessible to RNA polymerase. When it is unpacked, it becomes euchromatin.