In which kind of cross would you expect to find a ratio of 9:3:3:1 among the F₂ offspring? A) monohybrid cross B) dihybrid cross C) test cross D) homozygous recessive x homozygous dominant E) homozygous dominant x heterozygous

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For a dihybrid cross the parents would need to be heterozygous for both of two traits. Example: RrYy x RrYy would produce RRYY, RRYy, RRyy, RrYY, Rryy, rrYY, rrYy, or rryy as genotypes the phenotypes of these would be 9 dominant for both traits to 3 recessive for the first trait and dominant for the second trait to 3 dominant for the first trait and recessive for the second and 1 recessive for both traits.Bloom's

In Which Kind of Cross Would You Expect to Find