AP BIOLOGY

Detailed explanation-1: -Disadvantages include a reduction in genetic diversity and discomfort for animals that have very exaggerated characteristics. It can create offspring with different traits. The major disadvantage of the selective breeding is the reduction of the number of genes in the gene pool of an organism.

Detailed explanation-2: -But selective breeding, when taken to the extreme, can lead to the development of genetic disorders. And indeed, numerous dog breeds today suffer from severe health issues caused by extreme physical features. Genetic disorders are health problems caused by ‘flaws’ in an individual’s genome.

Detailed explanation-3: -Inbreeding causes painful and life-threatening genetic defects in “purebred” dogs and cats, including crippling hip dysplasia, blindness, deafness, heart defects, skin problems, and epilepsy. Distorting animals for specific physical features also causes severe health problems.

Detailed explanation-4: -Regardless of size, every breeder is responsible for exacerbating the overpopulation crisis. Breeding dogs is cruel and irresponsible, especially given the extensiveness of companion animal overpopulation. Dog breeders treat living individuals as commodities to be genetically manipulated for profit.