Dihybrid Cross Questions The chestnut coat color of horses is due to a recessive gene, while the dominant allele
results in black. The pacing gait is due to a recessive gene, whereas the dominant
allele results in the trotting gait. Show the types of offspring that could result from a
cross of a black trotter (male), heterozygous for both genes, with a chestnut pacer
(female). Generate a Punnett square for this cross to help you answer the following
questions:
a. Possible genotypes for Black coat: Chestnut coat:
b. Possible genotypes for Trotting gait: Pacing gait:
c. Male genotype:
Male possible gametes:
d. Female genotype:
Female possible gametes:
e. Genotypic Ratio:
1. Phenotypic Ratio:
Q. What percentage of the offspring will exhibit both dominant traits?
h. What percentage of the oflspring will be chestnut trotters?
i. What are the chances of having a chestnut horse that paces? (ex: 2/16)
B-Black Coat Color
b-Chestnut Coat Color
G-Trotting Gait
9-Pacing Gait