Recall that in Mendel's work, mating between yellow, wrinkled, seed-producing plants and plants that produced smooth green seeds resulted in a ratio of 9:3:3:1 for progeny phenotypes (refer to Fig. 16.12). This observed ratio can be explained by:
A)the multiplication rule.
B)incomplete dominance.
C)the addition rule.
D)the principle of independent assortment.
E)both the multiplication rule and the principle of independent assortment.

Question

Quizplus · Accepted Answer

The 9:3:3:1 ratio observed in Mendel's dihybrid crosses is explained by the principle of independent assortment, which states that alleles of different genes assort independently of one another during gamete formation. The multiplication rule is used to predict the probability of two independent events both occurring, which is applicable here for calculating the combined probabilities of inheriting two independent traits.

Recall That in Mendel's Work, Mating Between Yellow, Wrinkled, Seed-Producing