Question

when mendel crossed purebred purple flowering plants (pp) with purebred white flowering plants (pp), what were the flower colors of the resulting offspring?
25 percent white and 75 percent purple
50 percent white and 50 percent purple
100 percent purple
100 percent white

Explanation:

Step1: Determine parental gametes

The pure - bred purple plant (PP) can only produce gametes with the allele P. The pure - bred white plant (pp) can only produce gametes with the allele p.

Step2: Use Punnett - square principle

When we cross these two plants, all of the offspring will have the genotype Pp. Since the P allele is dominant over the p allele, all of the offspring will have purple flowers.

Answer:

C. 100 percent purple