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Which one of the following condition in humans, is correctly matched

Which one of the following condition in humans, is correctly matched with its chromosomal abnormality / linkage?

Options

(a) Klinefelters syndrome-44 autosomes a XXY
(b) Colour blindness-Y-linked
(c) Erythroblastosis foetalis-X-linked
(d) Down syndrome-44 autosomes + XO

Correct Answer:

Klinefelters syndrome-44 autosomes a XXY

Explanation:

Klinefelter’s syndrome is a gentic disorder affecting men in which an individual gains an extra X chromosomes, so that the usual Karyotype of XY is replaced by one of XXY. Symptoms of Klinefelter’ssyndrome named after us physicial H.P. klinefelter, include female characteristics (such as breast enlargement.

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