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Klinefelter Syndrome

The genotype ...

Question

The genotype of a person suffering from Klinefelter's syndrome is .

A

44+XYY

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B

44+XXY

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C

44+XO

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Solution

The correct option is B 44+XXY

Klinefelter's syndrome is caused due to the presence of an additional X chromosome in males.

This results in 44 autosomes + XXY allosomes (total 47 chromosomes).

Such men are sexually sterile because their reproductive organs are not well developed.

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Similar questions

Q. Which among the following genotypes will exhibit Klinefelter's syndrome?

Q. Identify the person who suffers fro, Klinefelter's syndrome. Write its symptoms.

Q. Assertion [A]: Patients suffering from Klinefelter's syndrome have high amounts of estrogen secreted in their body.

Reason [R]: Klinefelter's syndrome occurs due to the presence of an extra X chromosome in human males.

Q. Match list-I with list-II and select the correct answer using the code given below:
List-I (Syndrome) List-II (Chromosomal abnormality)
(1) Patau's syndrome (A) 44 + XXY = 47

(2) Klinefelter's syndrome (B) 44 + XO = 45
(3) Down's syndrome (C) 46 + 1 = 47, (trisomy 13)

(4) Turner's syndrome (D) 46 + 1 = 47, (trisomy 21)

Q. What is the genotype of a person having Klinefelter syndrome?

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