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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
Which of the following option is correct about human egg?
  • A
    It has one Y chromosome.
  • B
    It has two X chromosomes.
  • C
    It has one X chromosome.
  • D
    It has XY chromosomes.
✓

Answer

  1. It has one X chromosome.

Explanation:

Human females have XX chromosomes as the sex chromosomes.During the formation of gametes, meiosis takes place.Each gamete thus contains an X chromosome.Human males have XY as the sex chromosomes.Thus, human sperms contain one X or one Y chromosome.

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