Which of the following represents the correct composition of a eukaryotic nucleosome core?
A) histone H1
B) one copy each of histone H2A, H3, and H4
C) one copy each of histone H1, H2A, and H2B
D) two copies each of histone H2A, H2B, H3, and H4
E) two copies each of histone H1, H2A, H3, and H4

Question

Quizplus · Accepted Answer

A eukaryotic nucleosome core is composed of two copies each of histones H2A, H2B, H3, and H4, forming an octamer around which DNA is wrapped.  The binding of DNA by the histones generates a structure called the nucleosome. The nucleosome core contains an octamer protein structure consisting of 2 subunits each of H2A, H2B, H3, and H4. Histone H1 occupies the internucleosomal DNA and is identified as the linker histone. The nucleosome core contains approximately 150 bp of DNA.

Which of the Following Represents the Correct Composition of a Eukaryotic