Question

if you cross a purebred pea plant with green seeds and a purebred pea plant with the dominant trait of having yellow seeds, what percent of their f1 offspring will have green seeds? a 100% b 75% c 0% d 25%

Explanation:

Step1: Determine the genotypes

Let \(G\) represent the allele for yellow seeds (dominant) and \(g\) represent the allele for green seeds (recessive). A purebred yellow - seeded plant has genotype \(GG\), and a purebred green - seeded plant has genotype \(gg\).

Step2: Perform the cross

When \(GG\times gg\), using the Punnett square method:

Gametes of \(GG\)	Gametes of \(gg\)
\(G\)	\(g\)

All of the \(F_1\) offspring will have the genotype \(Gg\). Since \(G\) (yellow) is dominant over \(g\) (green), the phenotype of all \(F_1\) offspring is yellow.

Answer:

C. 0%