You are studying a histone complex that contains an unusually high level of modification with acetyl groups.What can you conclude about the DNA bound to this histone complex?
A)It contains actively transcribed genes.
B)It is most likely heterochromatin.
C)It is most likely telomeric.
D)It is most likely derived from a condensed Barr body.

Question

Quizplus · Accepted Answer

Histone acetylation is associated with transcriptional activation by loosening the DNA-histone interaction, allowing transcription factors and RNA polymerase easier access to the DNA. This modification is common in regions of DNA that contain actively transcribed genes, not in heterochromatin, telomeric regions, or Barr bodies, which are more condensed and transcriptionally inactive.

You Are Studying a Histone Complex That Contains an Unusually