Question

What helps the 11nm fiber become more compact into the 30nm fiber?

a) Acetylation of histones
b) Methylation of DNA
c) Binding with non-histone proteins
d) Formation of looped domains

Answer 1

The compaction of the 11nm fiber into the 30nm fiber is aided by the binding with specific non-histone proteins, causing nucleosomes to coil into the thicker chromatin fiber.

Step-by-step explanation:

What helps the 11nm fiber become more compact into the 30nm fiber? The transformation of the 11nm fiber into the more compact 30nm fiber is facilitated by the association of specific non-histone proteins with the nucleosomes.

This association leads to the coiling of the nucleosomes and the linker DNA into a 30nm chromatin fiber. Thus, the correct answer is c) Binding with non-histone proteins.