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NEET 2023, Biology Q31: Sex Determination

NEET2023Biology
Q.

Which of the following statements are correct about Klinefelter's Syndrome?

A. This disorder was first described by Langdon Down ().

B. Such an individual has overall masculine development. However, the feminine developement is also expressed.

C. The affected individual is short statured.

D. Physical, psychomotor and mental development is retarded.

E. Such individuals are sterile.

Choose the correct answer from the options given below:

  1. A

    A and B only

  2. B

    C and D only

  3. C

    B and E only

  4. D

    A and E only

Solution

Klinefelter syndrome (, XXY) gives a phenotypically male individual with overall masculine development plus some feminine features (gynaecomastia, etc.) — statement B is correct. The extra X chromosome typically results in sterility — statement E is correct. Statements A, C, D belong to Down syndrome, not Klinefelter.

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