Crosses between a pure-breeding strain of white beet plants and a pure-breeding strain of yellow beet plants produced all white beet plants

Crosses between a pure-breeding strain of white beet plants and a pure-breeding strain of yellow beet plants produced all white beet plants. The F₁ plants were crossed to each other (self-cross) and the following F₂ plants were observed: 95 white beet plants, 25 red beet plants and 7 yellow beet plants.

A. (2pts) How many genes determine beet color? ­­­­­­­­­­­­­­

B. (4pts) Give the genotype of the parental white beet plant and the yellow beet plant. (Use A for a single gene inheritance, A and B for two gene inheritance and A, B, C for three gene inheritance. Write the genotype using proper notation.)

Genotype of P₁ white beet plant: 

Genotype of P₁ yellow beet plant: 

C. (6pts) What phenotypic ratio is observed in the F₂ progeny? (List the ratio as a complete fraction next to the phenotype). Example: ½ purple

D. (8pts) Write the genotypes of the following F₂ beet plants. (Write the genotype using proper notation.)

Genotype of the F₂ white beet: 

Genotype of the F₂ red beet: 

Genotype of the F₂ yellow beet: