In horses, black coat color is influenced by the dominant al…
In horses, black coat color is influenced by the dominant allele (B), and chestnut coat color by the recessive allele (b). Trotting gait is due to a dominant gene (T), pacing gait to the recessive allele (t). Give the phenotype and genotype of the horse you would use in a testcross to determine the genotype of a black trotter.