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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 modern concept of gene is
  • A
    A segment of $DNA$ capable of crossing over
  • ✓
    A functional unit of $DNA$
  • C
    A segment of $DNA$
  • D
    A segment of chromosome
✓

Answer

Correct option: B.
A functional unit of $DNA$
b
(b) A gene is a segment of $DNA$ which contains the information for one enzyme or one polypeptide chain coded in the language of nitrogenous bases or the nucleotides.

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