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carrier




An individual who possesses one copy of a mutant allele that causes disease only when two copies are present. Although carriers are not affected by the disease, two carriers can produce a child who has the disease.

In the case of an infectious disease, a carrier is a person who carries the agent, such as a virus, reponsible for the disease, while often remaining quite wll.


Related categories

   • GENETICS AND HEREDITY
   • HEALTH AND DISEASE

Source: National Human Genome Research Institute