If a plant is inherited by complete dominance where homozygous dominant is a red flower color and homozygous recessive is a white flower color, what must the parents' genotypes be if the offspring was 25% white and 75% red?
A) all red
B) one homozygous dominant, the other heterozygous
C) both heterozygous
D) one homozygous recessive, the other heterozygous
E) both homozygous dominant

Question

Quizplus · Accepted Answer

Both parents must be heterozygous (Rr) to produce offspring with a 3:1 ratio of red to white flowers, as this allows for the possibility of producing a homozygous recessive (white) offspring.

If a Plant Is Inherited by Complete Dominance Where Homozygous