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defined:
An individual who possesses one copy of a mutant allele that causes disease only when two copies are present. Although carriers not affected by the disease, two carriers can produce a child who has the disease.
explained:
Listen to a detailed explanation. Dr. Danilo Tagle, of the National Human Genome Research Institute's Genetics and Molecular Biology Branch, defines carrier.
relatedterms:
allele, mutation, heterozygous, homozygous
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