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).
Keep practising Unit 5C: Non-Mendelian Genetics & Population Transmission
Browse all Unit 5C: Non-Mendelian Genetics & Population Transmission questions for AP Biology, or explore more Biology topics.
Related questions
Which of the following is **not** a stop codon?The semiconservative nature of DNA replication was experimentally proved by:The F₂ **genotypic** ratio in Mendel's monohybrid cross is:In Mendel's monohybrid cross between true-breeding tall (TT) and dwarf (tt) plants, the F₂Mendel conducted his hybridisation experiments on which plant?In the Watson-Crick double helix, adenine pairs with thymine via how many hydrogen bonds?In birds, the sex-determination mechanism is:Down syndrome in humans is caused by