You are given a green pea plant with an unknown genotype. You want to figure out the genotype by crossing it with another plant and looking at the offspring. Which of the following plants would be the most helpful in determining the genotype of the original plant?

(A) Any green pea plant

(B) A homozygous green plant

(C) A yellow pea plant

(D) None of the above

In a species of peas, green (G) peas are known to be classically dominant over yellow (g) peas. A true breeding green plant and a true breeding yellow plant are crossed. The resulting F₁ generation is evaluated, and its phenotype distribution is shown in Table 1. Two green pea producing members of the F₁ generation are then crossed, and the resulting F₂ generation phenotype distribution is shown in Table 2.

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Table 1. F, Generation Type of Peas Produced Green Yellow Table 2. F, Generation Type of Peas Produced Green Yellow # of Plants 1,432 1 # of Plants 1,196 374