You are given two populations of true-breeding tomato plants with two simple dominant/recessive traits that sort independently. using the multiplication rule, how many different phenotypic combinations would you expect to see in the f2 generation? in what phenotypic ratio? a. two 3,1 b. three 9.6: 1 c. four, 9: 3: 3: 1

9:3:3:1

Explanation:

True-breeding organism, in this case plant, is the one that is homozygous for every trait.

So, if we cross two tomato plants that are true-breedin, for example AABB aabb:

P: AABB  x  aabb

F1: AaBb

all of the offspring will have heterozygous genotype

In F2 genereation (AaBb x AaBb), phenotype ration would be 9:3:3:1

d. cellulose and starch