Question

In a cross between true breeding red flowered and true breeding white flowered plants of Antirrhinum the F\textsubscript{1 generation was pink flowered, which is an example of}

• A. Dominance
• B. Codominance
• C. Incomplete dominance
• D. Blending of contrasting forms of a character

Hint:

Incomplete dominance → intermediate phenotype (e.g., Antirrhinum, Snapdragon flowers).

Answer 1

The Correct Option is C

Step 1: Concept of incomplete dominance.
In incomplete dominance, neither allele is completely dominant. The heterozygous condition shows an intermediate phenotype.
Step 2: Example in Antirrhinum.
Crossing red (RR) and white (rr) flowers produces pink (Rr) in F\textsubscript{1}, showing incomplete dominance.
Step 3: Conclusion.
Thus, the phenomenon is an example of Incomplete dominance.