A trait is a specific characteristic that varies from one individual to another. Step-by-step explanation:
Traits are determined or manifested from the genes through the sequencing of specific DNA codes and also through environmental interactions.
The passing of various traits over generations is called heredity. Traits or specific characteristics like blood type, color of the eye or skin, height of a person varies with each person.
A trait is also termed as phenotype which is the observable specific characteristic (biochemical and physical) determined by the specific genotype.