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STD 12 - 5. molecular basis of inheritance — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 5. molecular basis of inheritance1 Mark
MCQ
$DNA$ is double helix and
  • A
    Complementary and parallel
  • ✓
    Complementary and antiparallel
  • C
    Without super coils
  • D
    Always circular
✓

Answer

Correct option: B.
Complementary and antiparallel
b
(b) The two strands $(polynucleotide chains)$ of Double helix are antiparallel complementary.

The sequence of nitrogenous bases in one determines the sequence of nitrogenous bases in the other.

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