| A | B |
|---|
| Species | Organisms similar to each other which can breed to produce fertile offspring |
| hybrid | Cross between two strains of a species |
| strains | Different types of one species |
| breeds | Another name for strains |
| cross breeds | Another name for hybrids |
| F1 | First cross offspring |
| vigour | Strength, thriving, doing very well. |
| offspring | The young new individuals produced by organisms |
| inbreeding | This weakes the strain by preventing hybrid vigor |
| hardiness | How tough an organism is |
| disease resistance | How well an organism can prevent or overcome infection |
| yield | How much an organism gives as a product |
