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NEET BIOLOGYMedium

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

A

This disorder was first described by Langdon Down (1866).

B

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

C

The affected individual is short statured.

D

Physical, psychomotor and mental development is retarded.

Step-by-Step Solution

:

  • Option B is Correct: Klinefelter's Syndrome is caused by an additional copy of the X-chromosome (47, XXY). The affected individual has overall masculine development, but feminine development (e.g., development of breast or Gynaecomastia) is also expressed, and they are sterile .
  • Options A, C, and D are Incorrect: These are characteristics of Down's Syndrome. Down's Syndrome was described by Langdon Down (1866), and affected individuals are short statured with retarded physical, psychomotor, and mental development .
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