Humans have bred at least one hundred different types of cats. When producing the next generation, cat breeders only select cats that fit very specific standards. Suppose a single gene with two alleles controls coat length in a fluffy breed of cat, such as a Persian. The S allele codes for short hair, and the s allele codes for long hair. The S allele is dominant, and the s allele is recessive. The graphs show the genotype frequencies of the original population and the genotype frequencies after several generations of selective breeding.