Question

What trait is determined by genetics alone?

Answer 1

There are many traits that are determined by genetics alone, as opposed to a combination of genetics and the environment. Good examples include blood type, eye colour and height. An example of a trait that is a combination of genetics and the envrionment is weight.

Answer 2

First is the physical appearance like eye color and hair color and a lot more. Second is the blood type. Third is the skills that might be inherited from either parents.