A 15:1 phenotypic ratio in a typical F₂ data set would be consistent with _____________________ affecting a particular phenotype.

Question

Quizplus · Accepted Answer

A 15:1 phenotypic ratio is not consistent with incomplete dominance, codominance, or the environment as those typically result in 3:1 or 1:2:1 ratios. It is also not consistent with epistatic alleles as those usually result in modified ratios. Therefore, the most likely explanation is that the phenotype is controlled by alleles of two genes.

A 15:1 Phenotypic Ratio in a Typical F2 Data Set

A 15:1 Phenotypic Ratio in a Typical F₂ Data Set