Inbreeding is the practice of breeding two animals that are related to each other. It tends to increase the
probability of producing homozygous offspring. Inbreeding has been used by animal breeders who are
seeking to produce breeds with particular traits. It sometimes occurs in human populations as well.
There are unintended genetic conditions that are exacerbated by inbreeding, however.
Using the media available to you, research and describe genetic problems in the organisms below that
are attributed to inbreeding.
• A pure-breed of a dog (you choose the breed)
• A pure-breed of a cat (you choose the breed)
• A pure-breed of a horse (you choose the breed)
Explain why inbreeding increases the likelihood of genetic disorders in offspring. Why do you think inbreeds are so popular and the animals usually have more health-related issues? Which animal did you find most interesting and why?
