NEET 1999 · Class 12

Principles of Inheritance and Variation

In human beings, multiple genes are involved in the inheritance of

  1. (A)sickle-cell anaemia
  2. (B)skin colour
  3. (C)colour blindness
  4. (D)phenylketonuria

The NCERT line that answers it

Verbatim line

Human skin colour is another classic example for this.

Chapter
Principles of Inheritance and Variation
Section
4.4 POLYGENIC INHERITANCE
Page
18
Words matched
26 of 26

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

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states 'Human skin colour is another classic example for this' where 'this' refers to polygenic inheritance involving multiple genes, directly matching the MCQ's requirement for multiple genes in inheritance.

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 1999 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.