Let R = red pigment and r = no pigment.In carnations,RR offspring make a lot of red pigment,rr offspring make no pigment and Rr offspring make a small amount of red pigment,thus appearing pink.Pink carnations are therefore an example of
A)codominance.
B)incomplete dominance.
C)epistasis.
D)pleiotropy.

Question

Quizplus · Accepted Answer

Incomplete dominance occurs when the heterozygous phenotype is intermediate between the two homozygous phenotypes. In this case, the Rr offspring have a phenotype that is intermediate between the RR and rr homozygotes, appearing pink due to a small amount of red pigment. This is different from codominance, where both alleles are expressed equally in the phenotype, and epistasis and pleiotropy, which involve more complex interactions between genes.

Let R = Red Pigment and R = No Pigment