NEET 1997 · Class 12

Principles of Inheritance and Variation

A person with the sex chromosomes XXY suffers from (1997)

  1. (A)gynandromorphism
  2. (B)Klinefelter's syndrome
  3. (C)Down's syndrome
  4. (D)Turner's syndrome

The NCERT line that answers it

Verbatim line

**Klinefelter's Syndrome :** This genetic disorder is also caused due to the presence of an additional copy of X-chromosome resulting into a karyotype of 47, XXY.

Chapter
Principles of Inheritance and Variation
Section
4.8.3 Chromosomal Disorders
Page
25
Words matched
16 of 25

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

8333, emb=1.0, combined=0.9333). Verified: high — The span explicitly states that Klinefelter's syndrome results from an additional X chromosome leading to karyotype 47, XXY, which directly matches the question about a person with XXY chromosomes.

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Question text is reproduced from the published NEET 1997 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.