A genetic carrier is someone who has the gene but does not express the trait.An example would be someone who is heterozygous for a dominant/recessive trait.

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A genetic carrier has one copy of the gene but does not show the trait, usually because the other copy is dominant or because the expression of the trait is suppressed. Heterozygous individuals have one dominant and one recessive allele, which means they may carry the recessive trait but exhibit the dominant one.

A Genetic Carrier Is Someone Who Has the Gene but Does