The phenotypic ratio 1:2:1 may indicate
A) complete dominance.
B) codominance.
C) epistasis.
D) recessive lethal.
E) codominance and epistasis.

Name: The phenotypic ratio 1:2:1 may indicate A) complete dominance. B) codominance. C) epistasis. D) recessive lethal. E) codominance and epistasis.
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Question

Quizplus · Accepted Answer

The 1:2:1 phenotypic ratio is typical of codominance, where both alleles in a heterozygote are fully expressed, resulting in a distinct phenotype for each genotype.

The Phenotypic Ratio 1:2:1 May Indicate