-The F₂ phenotypic ratio of 9:3:4 is a result of a cross involving A) two genes expressing complete dominance. B) a gene expressing dominance and another gene expressing codominance. C) two genes expressing codominance. D) epistasis, in which one gene modifies the expression of the other gene. E) multiple alleles.

Question

Quizplus · Accepted Answer

The 9:3:4 ratio is typical of recessive epistasis, where one gene's recessive alleles mask or modify the expression of another gene.

-The F2 Phenotypic Ratio of 9:3:4 Is a Result of a Cross

-The F₂ Phenotypic Ratio of 9:3:4 Is a Result of a Cross