In pedigree dog breeding, intense artificial selection for specific physical traits has often led to an increased risk of inherited genetic disorders. Which of the following strategies would be most effective at reducing the occurrence of these genetic disorders?
Restricting the breeding pool strictly to champion individuals that meet precise breed standards.
Introducing genes from wild ancestors through continuous cross-breeding in every generation.
Broadening the official breed standards to allow breeding with individuals that have greater genetic diversity.
Using somatic gene therapy to treat affected individuals before they are used for breeding.
