Two snapdragons heterozygous for alleles that encode red and white flower color are crossed. If the red and white alleles show incomplete dominance, what will be the ratios of phenotypes in the offspring?
A) 100% pink
B) 100% red
C) 50% white, 50% red
D) 25% red, 50% pink, 25% white
E) 25% pink, 50% white, 25% red

Question

Quizplus · Accepted Answer

In incomplete dominance, the heterozygous phenotype is intermediate between the two homozygous phenotypes. Crossing two heterozygous (Rr) snapdragons (where R = red and r = white) results in a 1:2:1 ratio of phenotypes: 25% RR (red), 50% Rr (pink), and 25% rr (white).

Two Snapdragons Heterozygous for Alleles That Encode Red and White