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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
Discontinuous synthesis of $\text{DNA}$ occurs in one strand, because:
  • A
    $\text{DNA}$ molecule being synthesised is very long.
  • ✓
    $\text{DNA}$ dependent $\text{DNA}$ polymearse catalyses polymerisation only in one direction $(5\ ’ \rightarrow 3\ ’).$
  • C
    It is a more efficient process.
  • D
    $\text{DNA}$ ligase has to have a role.
✓

Answer

Correct option: B.
$\text{DNA}$ dependent $\text{DNA}$ polymearse catalyses polymerisation only in one direction $(5\ ’ \rightarrow 3\ ’).$

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