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First-degree relative

Definition(s)

Any relative who is one meiosis away from a particular individual in a family (i.e., parent, sibling, offspring): Definition from: GeneTests from the University of Washington and the National Center for Biotechnology Information
A first degree relative is a family member who shares about 50 percent of their genes with a particular individual in a family. First degree relatives include parents, offspring, and siblings.: Definition from: Talking Glossary of Genetic Terms from the National Human Genome Research Institute


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