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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
The net electric charge on DNA and histones is:
  • A
    Negative and positive, respectively.
  • B
    Both negative.
  • C
    Both positive.
  • D
    Zero.
✓

Answer

  1. Negative and positive, respectively.

Explanation:

Histones carry positive charge, because they have an abundance of basic proteins arginine and lysine. The negatively charged DNA is wrapped around positively charged histone resulting in a net positive and negative charge.

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