Question

unit exam - genetics
how did mendel predict the traits would be produced in a dihybrid cross?
in equal proportions
in unequal proportions
in random proportions

Explanation:

Mendel's dihybrid cross experiments showed that traits are inherited independently. When he crossed pea plants with two different traits (e.g., seed color and seed shape), he found that the offspring showed a phenotypic ratio of 9:3:3:1. This ratio is not equal. For example, in a cross between \(YYRR\) (yellow round) and \(yyrr\) (green wrinkled) pea plants, the \(F_2\) generation has different proportions of different trait combinations. The 9:3:3:1 ratio indicates unequal proportions of traits.

Answer:

in unequal proportions