Selective breeding is a process in which humans choose the genetic traits they want in the offspring of a plant or an animal. Parent organisms with the desired genetic traits are chosen to breed with each other to increase the chance that the offspring will have the desired traits. Over several generations, selective breeding can produce changes in the genetic traits of organisms, resulting in a new breed or variety in a species. Humans have used selective breeding to develop a wide variety of breeds in some species such as dogs, cattle, cats, tomatoes, and apples.

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