alleryHistones are positively charged because they are rich in:
AGlutamic acid and aspartic acid
BCysteine and methionine
CLysine and arginine (basic amino acids)
DProline and glycine
Answer & Solution
Correct answer: C. Lysine and arginine (basic amino acids)
Histones are basic proteins rich in **lysine and arginine** — both carry positive charges on their side chains at physiological pH.
This lets histones bind tightly to negatively charged DNA (phosphate backbone).
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