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STD 12 - 4. principal of inheritance and variation — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 4. principal of inheritance and variation1 Mark
MCQ
In Drosophila, the sex is determined by
  • A
    The ratio of pairs of $X$-chromosomes to the pairs of autosomes
  • B
    Whether the egg is fertilized or develops parthenogenetically
  • ✓
    The ratio of number of $X$-chromosomes to the set of autosomes
  • D
    $X$ and $Y$-chromosomes
✓

Answer

Correct option: C.
The ratio of number of $X$-chromosomes to the set of autosomes
c
In Drosophila, sex is determined by the ratio number of $X$-chromosomes to the set of autosomes.

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