Questions 1. What genotypes and phenotypes would you expect in offspring from a mating of two horses with the genotypes AABB and aabb? 2. Would you expect the bay phenotype in offspring from a mating of two horses that each have the genotype Aabb? Explain. What genotypes and phenotypes would you expect in offspring from this mating in

When two horses with the genotypes AABB and aabb mate, all offspring will inherit one A and one B allele from the first horse and one a and one b allele from the second. This means all offspring will have the genotype AaBb, resulting in a uniform phenotype. If A represents a dominant allele for bay color and B represents a dominant allele for black coat, all foals would display the bay phenotype since they carry the dominant A allele. In the case of two horses with the genotype Aabb, the offspring can have a combination of either AaBb or Aabb alleles, since each parent can contribute either the A or a allele and one b allele. Offspring of this mating will have genotypes of 50% AaBb (bay phenotype) and 50% Aabb (also bay phenotype). Hence, 100% of the foals will show the bay appearance! So, bring on the cuteness!