DOMINANT AND RECESSIVE TRAITS
Traits in the left-hand column dominate over those listed in the right-hand column.
| Dominant Traits | Recessive Traits | |
| Eye coloring | Brown eyes Gray, green, hazel Blue |
Grey, green, hazel,blue eyes Blue Albino (pink) |
| Vision | Farsightedness Normal vision Normal sight Normal color vision |
Normal vision Nearsightedness Night vision Color blindness |
| Hair | Dark hair Non-red hair (blonde, brunette) Curly hair Full head of hair Widow's peak hairline |
Blonde hair, light hair Red hair Straight hair |
| Facial features | Dimples in cheek Unattached ear
lobes "Roman" nose Broad lips |
No dimples Attached ear lobes Straight nose Thin lips |
| Appendages | Extra digits Fused digits Short digits Fingers lacking one joint Limb dwarfing Clubbed thumb Double-jointedness |
Normal number Normal Normal length Normal Normal proportion Normal thumb Normal joints |
| Other | Immunity to poison ivy Normal coloring (pig- mented skin) Normal blood clotting Normal hearing Normal Normal Normal |
Susceptibility to poison ivy Albinism Hemophilia |