| Resistance to sleeping sickness is one trait that potentially could spread through selective breeding. |
| In other words, the colour may be as much the result of selective breeding as of ancient purity. |
| Thus, the modern English setter was developed through selective breeding during the 19th century. |
| Moreover, selective breeding has been for fur characteristics, rather than for domestication. |
| It is even at work when a new type of dog is created through selective breeding. |
| His enduring fame, or infamy, rests on eugenics, which means, crudely, the selective breeding of humans. |
