NEET 1991 · Class 12

Principles of Inheritance and Variation

RR (Red) Antirrhinum is crossed with white (WW) one. Offspring RW are pink. This is an example of

  1. (A)dominant-recessive
  2. (B)incomplete dominance
  3. (C)hybrid
  4. (D)supplementary genes

The NCERT line that answers it

Verbatim line

**Figure 4.6** Results of monohybrid cross in the plant Snapdragon, where one allele is incompletely dominant over the other allele

Chapter
Principles of Inheritance and Variation
Section
4.2.2 Law of Segregation
Page
9
Words matched
20 of 20

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

How this line gives the answer

3333, emb=0.7601, combined=0.5894). Verified: high — The span explicitly states 'where one allele is incompletely dominant over the other allele' and shows the phenotypic ratio of red:pink:white (1:2:1), which directly matches the MCQ scenario and conclusively identifies incomplete dominance.

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