The version of a particular gene that takes precedence over other variants, being expressed even if only one copy is present.
The version of a particular gene that takes precedence over other variants, being expressed even if only one copy is present. The classic example is human eye color, where the brown allele is dominant over the blue allele. If a child inherits the brown eye color allele from one parent and the blue version from the other, they will have brown eyes.
The classic example is human eye color, where the brown allele is dominant over the blue allele. If a child inherits the brown eye color allele from one parent and the blue version from the other, they will have brown eyes.