Botany-Incomplete Dominance
NEET Botany Incomplete Dominance Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 12
Assertion (A): In incomplete dominance, the phenotype of the F1 generation is a blend of the parental traits.
Reason (R): Incomplete dominance results in a phenotypic ratio of 1:2:1 in the F2 generation, differing from the Mendelian 3:1 ratio.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option A
Detailed Explanation
Incomplete dominance occurs when the F1 phenotype is intermediate between the two parents, as seen in the snapdragon flower color example. The F2 generation shows a phenotypic ratio of 1:2:1 (red:pink:white) rather than the Mendelian 3:1.
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