A nucleosome is composed of
Correct answer: A. DNA and histone protein
- A. DNA and histone protein
- B. RNA and histone protein
- C. Nitrogenous base and sugar.
- D. Niitrogenous base, sugar and phosphate
Explanation
A nucleosome is composed of DNA and histone proteins, forming the basic unit of DNA packaging in eukaryotic cells. The DNA wraps around a core of eight histone proteins, helping to compact the DNA to fit within the nucleus. Option B is incorrect because RNA is not involved in nucleosome structure. Options C and D describe components of nucleotides, not nucleosomes.
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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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