In peas, the yellow color of the seeds dominates over the green, the smooth shape of the fruit over the wrinkled

In peas, the yellow color of the seeds dominates over the green, the smooth shape of the fruit over the wrinkled. Determine the phenotype and genotype of seeds in the offspring from crossing a double recessive homozygote with a double heterozygote. What are the traits of the parents?

Let’s designate the gene for yellow color of seeds as C, then the gene that determines their green color will be c. Let’s designate the gene for smooth pea fruit as P, then the gene that causes wrinkled beans will be p.

Double recessive homozygote, according to the introduced designations, will be ccpp, which will phenotypically be expressed in the formation of green wrinkled beans by the plant. Such a plant will produce the same type of sex cells cр.

The double heterozygote, CcPp, will be a plant with smooth yellow beans that will produce sex cells CP, cp, Cp, and cP.

The seeds that can be obtained by crossing the above plants will be represented by the following options:

yellow smooth beans (СсРр) – 25%;

green wrinkled beans (ssrr) – 25%;

yellow wrinkled beans (Ссрр) – 25%;

smooth green beans (ccPр) – 25%.