Nucleosome core is made of:
Correct answer: D. H 2 A, H 2 B, H 3 and H 4
- A. H 1, H 2 A, H 2 B and H 3
- B. H 1, H 2 A, H 2 B, H 4
- C. H 1, H 2 A, H 2 B, H 3 and H 4
- D. H 2 A, H 2 B, H 3 and H 4
Explanation
The Nucleosome core or histone octamer is made up of two subunits, each of H2A, H2B, H3, and H4 histone proteins. It is about 710 nm in diameter, consisting of histones around which a DNA strand, about 120 base pairs long, is wrapped in chromosomes.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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