Almost all the human traits show variation. Variations occur in the generations of sexually reproducing organisms. The two human traits that show variation are as follows :

i) Ear lobes: free and attahed earlobes, is closely attached to the side of the head in some of us and not in others.Free and attached are two variants found in human being.

ii) Eye color : from black to brown to blue to hazel brown, there are so many shades of eye colours found in the human population.