The diameter of Histone is
Correct answer: B. 2 nm
- A. 1 nm
- B. 2 nm
- C. 3 nm
- D. 4 nm
Explanation
A histone is a protein that provides structural support to a chromosome. It is composed of mostly positively charged amino acid residues such as lysine and arginine. Histone is approximately 2 nm wide.
This question appeared on the ETEA MDCAT 2011 paper, which you can sit online with every answer explained.
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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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