Question

question 3 of 10
which cross could be used to determine whether two traits are distributed
among offspring independently of each other?
a. a plant that is true - breeding for constricted yellow pods is crossed
with a plant that is true - breeding for smooth green pods.
b. a plant that is heterozygous for wrinkled seeds is crossed with a
plant that is true - breeding for wrinkled seeds.
c. a plant that is true - breeding for yellow seeds is crossed with a
plant that is true - breeding for green seeds.
d. a plant that is true - breeding for smooth green seeds is crossed
with a plant that is true - breeding for terminal purple flowers.
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Explanation:

To determine if two traits are distributed independently, a dihybrid cross (involving two traits) is needed. Option A has two traits (pod shape and pod color). Option B has one trait (seed shape). Option C has one trait (seed color). Option D has two traits but they are not likely to be studied for independent assortment as they are different types (seed and flower) and might be on different chromosomes in a way not relevant for testing the principle of independent assortment of two traits in the same general context as Mendelian genetics for two - trait crosses.

Answer:

A. A plant that is true - breeding for constricted yellow pods is crossed with a plant that is true - breeding for smooth green pods.