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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
The two polynucleotide chains in a $\text{DNA}$ are:
  • A
    Parallel
  • B
    Discontinuous
  • ✓
    Antiparallel
  • D
    Semiconservative
✓

Answer

Correct option: C.
Antiparallel

$\text{DNA}$ strands are antiparallel in nature. While one strand of the double-stranded $\text{DNA}$ runs the in $5\ ' \rightarrow \rightarrow 3\ '$ direction the other strand is placed parallel to it in the reverse direction i.e. $3\ ' \rightarrow \rightarrow 5\ '$ direction.

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