Chromatin Contains Several Levels of Structure Which Include

Question

Chromatin contains several levels of structure which include
A) Nucleosomes
B) 200 nm filaments
C) 30 nm fiber
D) Both B and C are correct
E) All of the above are correct

Accepted Answer

Chromatin structure includes nucleosomes, which are the basic unit of DNA packaging, consisting of DNA wrapped around histone proteins. The 30 nm fiber is a higher-order structure formed by the folding of the nucleosome chain, and the 200 nm filaments represent even higher-order folding, contributing to the compactness of chromatin in the cell nucleus. Therefore, all of the options listed are correct levels of chromatin structure.