III. Heterozygous x Heterozygous
This combination would produce a 1:2:1 ratio of genotypes (AA:Aa:aa) and a 3:1 ratio of phenotypes (dominant:dominant:homozygous recessive).
Given three possible phenotypes for parents showing dominance (AA, Aa, aa), which combination would produce a 1:2:1 ratio of genotypes and a 3:1 ratio of phenotypes?
I. AA x Aa
II. Aa x aa
III. Heterozygous x Heterozygous
IV. Aa x Aa
V. Homozygous dominant x Heterozygous
1 answer
1 answer