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

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation1 Mark
MCQ
Sex is determined in human beings.
  • A
    By ovum.
  • ✓
    At time of fertilization.
  • C
    $40$ Days after fertilization.
  • D
    Seventh to eight week when genitals differentiate in foetus.
✓

Answer

Correct option: B.
At time of fertilization.

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