Question

This passage describes the Tobiano patterning trait in horses: The Tobiano pattern is a type of coat pattern in horses. Horses with Tobiano patterning have white legs and rounded white patches on their bodies. Their tails may also have a mix of white and colored hairs. In a group of horses, some individuals have Tobiano patterning and others do not. In this group, the gene for the Tobiano patterning trait has two alleles. The allele B is for having Tobiano patterning, and the allele b is for not having Tobiano patterning. Dolly is a horse from this group. Dolly's phenotype for the Tobiano patterning trait is having Tobiano patterning. Dolly's genotype for the Tobiano patterning gene is Bb. Based on this information, complete the following statement. is it homozygous or heterozgous

Answer 1

Based on the information provided, Dolly's genotype for the Tobiano patterning gene is Bb, which means she has one allele for Tobiano patterning (B) and one allele for not having Tobiano patterning (b). Since she has two different alleles, Dolly is **heterozygous** for the Tobiano patterning trait.