Problem:
Question: Which of these sentences most accurately describes heterochromatin?
a) It consists mainly of DNA being actively transcribed.
b) It consists mainly of DNA being actively repressed.
c) It consists mainly of lightly packed DNA.
d) It consists mainly of more densely packed DNA.
e) It consists mainly of DNA that is more densely packed and that is actively being repressed.
Include source of information for best answer.