Question

When Mendel crossed his pure lines of purple and white flowering peas, each plant in the first filial generation had purple flowers. What must've been the plants genotype for this trait, if F represents purple and f represents white?

Answer 1

The plants in the first filial generation must have had a genotype of FF (homozygous dominant) or Ff (heterozygous) for the purple flower trait.

Step-by-step explanation:

When Mendel crossed his pure lines of purple and white flowering peas, each plant in the first filial generation had purple flowers. This suggests that the plants in the first filial generation must have had a genotype of FF (homozygous dominant) or Ff (heterozygous) for the purple flower trait. The genotype ff (homozygous recessive) would result in white flowers, but since none of the offspring had white flowers, the plants must have had at least one dominant allele for purple flowers.