Extra chromosome 'X' is present in which

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Target Exam

CUET

Subject

Biology

Chapter

Principles of Inheritance and Variation

Question:

Extra chromosome 'X' is present in which of the following cases?

Options:

Down Syndrome.

Turners Syndrome.

Klinefelters' syndrome.

Carpel Tunnel Syndrome.

Correct Answer:

Klinefelters' syndrome.

Explanation:

Klinefelter syndrome (sometimes called Klinefelter's, KS or XXY) is where boys and men are born with an extra X chromosome.