A Barr body is an example of what?
A) Constitutive heterochromatin
B) Facultative heterochromatin
C) Constitutive euchromatin
D) Facultative euchromatin

Question

Quizplus · Accepted Answer

Barr bodies are formed from inactivated X chromosomes in female cells, and are an example of facultative heterochromatin. This means that the same region of the chromosome can be actively expressed in some cells (where the chromosome is not inactivated) and silenced in others (where the chromosome is inactivated and condensed into a Barr body).

A Barr Body Is an Example of What