alleryA nucleosome in eukaryotic chromatin contains how many base pairs of DNA wrapped around the histone octamer?
A146 bp
B200 bp
C300 bp
D1000 bp
Answer & Solution
Correct answer: B. 200 bp
A typical nucleosome contains 200 bp of DNA wound around a histone octamer of two each of H2A, H2B, H3 and H4. Nucleosomes are the repeating unit of chromatin, seen as 'beads-on-string'.
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