Which inheritance pattern produces an offspring phenotype that is a blend of parental phenotypes?

Which inheritance pattern produces an offspring phenotype that is a blend of parental phenotypes?

• A. Co dominance
• B. Incomplete dominance
• C. Sex determination
• D. Test cross

Answer: (B)

Incomplete dominance is when neither allele is fully dominant, so the heterozygote shows a phenotype that is intermediate between the two parental traits. For example, crossing red and white flowers can produce pink offspring—an actual blend of the parental colors, not red or white. This contrasts with co-dominance, where both traits appear together (the organism displays both phenotypes), and with sex determination or a test cross, which involve different genetic concepts. So the pattern that produces a blended phenotype is incomplete dominance.

Incomplete dominance is when neither allele is fully dominant, so the heterozygote shows a phenotype that is intermediate between the two parental traits. For example, crossing red and white flowers can produce pink offspring—an actual blend of the parental colors, not red or white. This contrasts with co-dominance, where both traits appear together (the organism displays both phenotypes), and with sex determination or a test cross, which involve different genetic concepts. So the pattern that produces a blended phenotype is incomplete dominance.