A chestnut-colored (red-colored) horse is mated with a cremello (cream-colored) horse. Over a 10-year period, all of their offspring are palominos (gold-colored). This pattern of inheritance is best explained by

Question

a. complete dominance.
b. incomplete dominance.
c. environmental effects on genes.
d. multiple gene effects.

Answer 1

b. incomplete dominance.

In incomplete dominance, the phenotype of the heterozygote is intermediate between the phenotypes of the two homozygotes. In this case, the palomino color is a result of the blending of the chestnut and cremello colors.