Question

What is the term used for the difference in a trait in a human being

Answer 1

allele? The 2 characters of a trait are alleles.

Answer 2

Trait (biology) In biology, a trait or character is a feature of an organism. The term phenotype is sometimes used as a synonym for trait in common use, but strictly speaking, does not indicate the trait, but the state of that trait (e.g., the trait eye color has the phenotypes blue, brown and hazel).