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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
The equivalent of a structural gene is
  • A
    muton
  • ✓
    cistron
  • C
    operon
  • D
    recon.
✓

Answer

Correct option: B.
cistron
b
(b) : Cistron (or gene) is a length of $DNA$ that contains the information for coding a specific polypeptide chain or a functional $RNA$ molecule ($i.e.$, transfer $RNA$ or ribosomal $RNA$). Hence, cistron is a unit of function. Currently such a gene is called structural gene.

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