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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation1 Mark
MCQ
In Drosophila the XXY constitution determines:
  • A
    Maleness
  • B
    Femaleness
  • C
    Intersex
  • D
    Both A and C
✓

Answer

  1. Femaleness

Explanation:

In Drosophila, XXY leads to femaleness. Here, Y has no contributions in femaleness. Sex in Drosophila is determined by the ratio of sex chromosome (X) and autosomes.

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