Question

In pea plants, the allele for yellow seeds is dominant to the allele for green seeds. If a plant that has heterozygous yellow seed is crossed with one that has only homozygous green seeds, what percent of their first generation offspring would you expect to have green seeds?
optional Answer
0%
25%
100%
50%

Answer 1

In pea plants, the allele for yellow seeds is dominant to the allele for green seeds. If a plant that has heterozygous yellow seed is crossed with one that has only homozygous green seeds, 50% of their frst generation offspring would you expect to have green seeds

Answer 2

Answer: The correct answer is 50%

Explanation-

Allele for yellow seed is dominant to the allele for green seeds.

Let 'Y' represents the allele of yellow seeds and y represents the allele for green seeds.

According to the question, genotypes of the parent plants are-

Hetrozygous Yellow seeds- Yy and Homozygous Green seeds- yy.

Percent of first generation with green seeds = $\frac{2}{4} \times100$

                                                                          = 50 %