| A | B |
|---|
| variation means | differences |
| have dry scaly skin | reptiles |
| give birth to live young | mammals |
| lay eggs with hard shells | birds |
| breathe using gills | fish |
| have a muscular foot | molluscs |
| animals with a backbone | vertebrate |
| animals without a backbone | invertebrate |
| have jointed legs | arthropods |
| eg of an echinodeem | starfish |
| have waxy needle shaped leaves | conifers |
| have roots stems and leaves but no flowers | ferns |
| no proper roots, no flowers | mosses and liverworts |
| have roots, stems, leaves and flowers | flowering plants |
| when data does not fit into groups | continuous variation |
| data which does fit in groups | discontinuous variation |
| a condition caused by genes | haemophilia |
| a condition not caused by genes | cancer |
| the process of transferring genes from on organism to another | genetic engineering |
| variation is either | genetic or environmental |
| an environmental characteristic | scars |
| a genetic characteristic | eye colour |
