NEET 1997 · Class 12

Principles of Inheritance and Variation

Genetic identity of a human male is determined by

  1. (A)sex-chromosome
  2. (B)cell organelles
  3. (C)autosome
  4. (D)nucleolus

The NCERT line that answers it

Verbatim line

A pair of X-chromosomes are present in the female, whereas the presence of an X and Y chromosome are determinant of the male characteristic.

Chapter
Principles of Inheritance and Variation
Section
4.6.1 Sex Determination in Humans
Page
20
Words matched
24 of 24

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

How this line gives the answer

6667, emb=0.9804, combined=0.8549). Verified: high — The span explicitly states that the presence of X and Y chromosomes determines male characteristics, which directly answers the question about genetic identity of a human male.

We did this for 1,565 questions.

Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

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.