In horses, trotting is dominant to pacing and chestnut is dominant to white.
A What would be the phenotype of a trotter, pure white mare crossed pure pacer, pure chestnut stallion
b. cross two of the F1 and gibe phenotype only of the F2
c. Give the phenotype and genotype of a cross between TtCc x TTCc
Answer: Chestnut trotter. A phenotypic ratio for F2 will be 9 chestnut trotters : 3 white trotters : 3 chestnut pacers : 1 white pacers. Genotypes: TTCC, TTCc, TtCC, TtCc, TTCc, TTcc, TtCc, Ttcc Phenotypic ratio: 3 chestnut trotters : 1 white trotter.