Question

in pea plants, the trait for green seed pods (g) is dominant over the trait for yellow seed pods (g). which cross will produce the maximum number of offspring with green seed pods?

• gg × gg
• gg × gg
• gg × gg
• gg × gg

Explanation:

Step1: Analyze GG × gg cross

When GG (homozygous dominant) is crossed with gg (homozygous recessive), all offspring will be Gg (heterozygous) and have green seed pods as the dominant - G allele determines green color. The probability of green - pod offspring is 100% or 4/4.

Step2: Analyze Gg × Gg cross

Using a Punnett - square for Gg × Gg cross, the genotypes of the offspring are GG:Gg:gg in the ratio 1:2:1. The proportion of green - pod offspring (GG and Gg) is 3/4.

Step3: Analyze gg × gg cross

When gg (homozygous recessive) is crossed with gg, all offspring will be gg with yellow seed pods. The probability of green - pod offspring is 0/4.

Answer:

A. GG × gg