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Question: Answered & Verified by Expert
A women with 47 chromosomes due to three copies of chromosome 21 is characterized by:
BiologyPrinciples of Inheritance and VariationNEETNEET 2005
Options:
  • A superfemaleness
  • B triploidy
  • C turner syndrome
  • D down syndrome.
Solution:
2237 Upvotes Verified Answer
The correct answer is: down syndrome.
Down Syndrome is a chromosomal aneuploidy, caused by an extra copy of chromosome 21 known as trisomy 21. Turner syndrome is caused by partial or complete loss (monosomy) of the second sex chromosome $(22+\mathrm{XO})$. Triploidy is the presence of an additional set of chromosomes in the cell for a total of 69 chromosomes rather than the normal 46 chromosomes per cell.

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