The basic structural unit of a chromosome is____________?
Correct answer: B. Nuceleosome
- A. The centromere
- B. Nuceleosome
- C. Telomere
- D. Histone
Explanation
A nucleosome is the basic structural unit of chromatin, formed when DNA winds around a core of histone proteins, helping package DNA into chromosomes. Students often choose histone because it is part of the nucleosome, but histone alone is not the complete repeating unit.
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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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