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Principles of Inheritance and Variation question

2008 · Q69
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Principles of Inheritance and Variation question

2008 · Q69

NEETBiologyPrinciples of Inheritance and VariationMCQ+4 / −1
Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage?
  1. A
    Klinfelter's syndrome — 44 autosomes + XXY
  2. B
    Colour-blindness — Y-linked
  3. C
    Down syndrome — 44 autosomes + XO
  4. D
    Erythroblastosis foetalis — X-linked
View written solutionFree

Correct answer: A

Klinefelter's syndrome is a genetic disorder affecting men in which an individual gains an extra X chromosome, so that the usual Karyotype of XY is replaced by one of XXY. Symptoms of Klinefelter's syndrome named after us physician H.P. Klinefelter, include female characteristics (such as breast enlargement).
So, the corresponding genotype will be AaBb.

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