Which idea is depicted by a cross in which the \(F_1\) generation resembles both the parents?

A Inheritance of one gene
B Codominance
C Incomplete dominance
D Complete dominance

Verified Solution

Answer & Solution

Correct Answer

(B) Codominance

Step-by-step Solution

Detailed explanation

(b): In codominance, both the alleles are able to express themselves independently when present together resulting in a phenotype that is intermediate between both the parental homozygous phenotypes, thereby resembling both of them. \(E.g.\), roan coat colour in cattle is a result of codominance of alleles for white and red coat colour.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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