What are human genetic traits that are easily observed?

Answer 1

There are many traits that are easy to observe, and we refer to them as phenotypes. All traits, phenotypes, are coded for by their genetic code, genotypes. Some common easily observable traits in humans are;

1. cleft chin
2. widow's peak hairline
3. hitch hikers thumb
4. freckles
5. attached earlobes
6. and PTC tasting- bitter taste buds!

Answer 2

Right or Left hand would be an easily observable genetic trait.