What is the genetic relationship between alleles when a heterozygous individual exhibits a distinct intermediate phenotype between both homozygous parents (such as pink snapdragon flowers from red and white parents)?
Answer and explanation
Correct answer: B. Incomplete dominance
- Step 1: Distinguish non-Mendelian inheritance patterns.
- Step 2: Incomplete dominance occurs when neither allele is completely dominant, resulting in a heterozygous phenotype that is an intermediate blend between both homozygous phenotypes.
Answer
Incomplete dominance.
Why not the others: Complete dominance masks the recessive allele; codominance expresses both distinct phenotypes simultaneously without blending (e.g., AB blood type); epistasis involves one gene masking another.
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