In eukaryotes, nucleosomes comprise of which one of the following histones?
In eukaryotes, nucleosomes comprise of which one of the following histones?
Select an option to attempt
Correct Answer: Option B
Explanation
Nucleosome composition:The nucleosome core particle consists of:• A histone OCTAMER: two copies each of H2A, H2B, H3, and H4 (i.e., 8 histone molecules total)• ~147 bp of DNA wrapped ~1.75 turns around this octamer• H1 (linker histone): binds the DNA that enters and exits the nucleosome (linker DNA), stabilising higher-order chromatin structure — it is NOT part of the core octamer.Distinction: H1 is the LINKER histone; H2A, H2B, H3, H4 are the CORE histones.Answer: H2A, H2B, H3, and H4 (Option 2).