The four o'clock flower is an example of incomplete dominance: R = red,r = white,and Rr = pink.If two hybrids are crossed,what are the chances that an offspring will have pink flowers?
A)0%
B)25%
C)50%
D)75%
E)100%

Question

Quizplus · Accepted Answer

When two hybrids are crossed, the possible genotypes for their offspring are RR, Rr, and rr. RR will produce red flowers and rr will produce white flowers, while Rr will produce pink flowers. Since incomplete dominance means that the heterozygous genotype (Rr) produces an intermediate phenotype (pink), half of the offspring with the genotype Rr will have pink flowers. Therefore, the chance of an offspring having pink flowers is 50%.

The Four O'clock Flower Is an Example of Incomplete Dominance