Klinefelter's syndrome is due to

One X only

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One X and two Y

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One Y only

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Two X and one Y

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Solution

The correct option is D
Two X and one Y

Klinefelter's syndrome is an aneuploid condition with three sex chromosomes. It is caused by XXY genotype. This genotype results from the union of a non-disjunct XX egg and a normal Y sperm or a normal X egg and an abnormal XY sperm. The individual has 47 chromosomes (2n + 1).

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Similar questions

Assertion [A]: Klinefelter syndrome occurs only in males.

Reason [R]: Klinefelter syndrome is characterised by an additional Y chromosome in the karyotype.

Q. Assertion [A]: Turner syndrome occurs only in females.

Reason [R]: Turner syndrome is characterised by only one X chromosome.

Mark the odd one w.r.t to syndrome which occur due to failure of segregation of homologous pair of chromosomes during cell division cycle

A) klinefelter syndrome

B) down syndrome

C) turner syndrome

D) thalassemia

Q. What is the difference between klinefelter syndrome and homosexuality?
A person affected with klinefelter syndrome shows secondary characters of male or female???

Choose the correct option regarding the Assertion and Reason:

Assertion [A]: Patients having Klinefelter syndrome have higher amounts of estrogen in the body.
Reason [R]: Klinefelter syndrome occurs due to appearance of an extra X chromosome in the human males.

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