In peas, the yellow color of the seeds and the red color of the flower corollas dominate the green

In peas, the yellow color of the seeds and the red color of the flower corollas dominate the green color of the seeds and the white color of the flower corollas. The diheterozygous plant was baptized with a plant that has a green seed and a white corolla. Determine the genotypes and phenotypes of the first generation hybrids

To solve the problem, let us compare the given, all dominant features are indicated by capital letters, and recessive by lowercase.

Given: A – yellow color of seeds

a – green color of seeds

B – red color of flower corollas

b – white color of flower corollas

Now let’s start crossing:

R: AaBb x aabb

We get gametes from a ditererozygous parent individual and we get four types of gametes: AB Ab aB ab. The second parental individual is dihomozygous since it has recessive traits, therefore it has only one type of gametes: ab.

When crossing, first generation hybrids are obtained with the following genotypes:

G1: AaBb, Aabb, aaBb, aabb

These hybrids have the following phenotypes:

AaBb – yellow color of seeds, red color of flower corolla

Aabb – yellow seed color, white flower corolla

aaBb – green color of seeds, red color of flower corolla

aabb – green seed color, white flower corolla