NEET 2012 · Class 12

Principles of Inheritance and Variation

F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1 : 2 : 1. It represents a case of

  1. (A)co-dominance
  2. (B)dihybrid cross
  3. (C)monohybrid cross with complete dominance
  4. (D)monohybrid cross with incomplete dominance

The NCERT line that answers it

Verbatim line

Phenotypic ratio : red : pink : white 1 : 2 : 1

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=0.8152, combined=0.6224). Verified: high — The span explicitly shows a 1:2:1 phenotypic ratio in an F2 generation with the caption stating it's from 'monohybrid cross in the plant Snapdragon, where one allele is incompletely dominant over the other allele', which directly matches and distinguishes the correct answer.

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