| Subject | English | Spanish |
| anim.husb. | selective breeding | selección genética |
| life.sc., anim.husb., agric. | selective breeding | cría de razas seleccionadas |
| life.sc., anim.husb., agric. | selective breeding | selección artificial |
| life.sc., anim.husb., agric. | selective breeding | cría de razas selectas |
| life.sc., anim.husb., agric. | selective breeding | selección |
| anim.husb. | selective breeding | cría selectiva |
| environ. | selective breeding of animals | cría selectiva de animales |
| environ. | selective breeding of animals Breeding of animals having desirable characters | cría selectiva de animales |
| life.sc., anim.husb. | selective breeding of animals | mejora |
| life.sc., anim.husb. | selective breeding of animals | reproducción animal |
| environ. | selective breeding of plants | mejoramiento vegetal selectivo |
| environ. | selective breeding of plants Breeding of plants having desirable characters | mejoramiento vegetal selectivo |
| life.sc., agric. | selective breeding of plants | mejora vegetal |
| life.sc., agric. | selective breeding of plants | selección artificial |