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

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 4. principal of inheritance and variation1 Mark
MCQ
Down's syndrome is an example of
  • ✓
    Anueploidy
  • B
    Polyteny
  • C
    Polyploidy
  • D
    Monoploidy
✓

Answer

Correct option: A.
Anueploidy
a
Aneuploidy is an abnormal number of chromosomes and is a type of chromosome abnormality. The presence of an extra chromosome $21$ is found in Down's syndrome.

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