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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
What is the width of DNA molecule?
  • A
    15 A°
  • B
    20 A°
  • C
    25 A°
  • D
    34 A°
✓

Answer

  1. 20 A°

Explanation:

The width of the double-stranded DNA (B DNA) molecule is around 2nm or 20 angstroms. 

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