Question

Assertion: Individuals with Klinefelter syndrome lose their secondary sexual characters and develop gynaecomastia.

Reason: The presence of the XYY chromosomal pattern leads to underdeveloped testes and reduced testosterone levels in affected males.

Options

• Both Assertion and Reason are true and Reason is the correct explanation for Assertion.

• Both Assertion and Reason are true but Reason is not the correct explanation for Assertion.

• Assertion is true and Reason is false.

• Both Assertion and Reason are false.

Answer 1

Assertion is true and Reason is false.

Explanation:

The XXY chromosomal pattern, not XYY, is what distinguishes Klinefelter syndrome from Jacob’s syndrome.