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

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 5. molecular basis of inheritance1 Mark
MCQ
During elongation of polypeptide chain, sigma factor is
  • ✓
    functionless
  • B
    retained for specific function.
  • C
    released for re-use.
  • D
    required during closing of chain.
✓

Answer

Correct option: A.
functionless
a
The function of sigma factor is to confer the specificity of $RNA$ synthesis at the promoter site. But during elongation of polypeptide chain, sigma factor is functionless.

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