First Degree Relationship - Medically, the degree of relationship is established by the number of shared genes. Web first degree relatives in a genetic family history are identified as those individuals with no other family members between. When referring to a specific individual in a pedigree (q.v.), any relative.
Web first degree relatives in a genetic family history are identified as those individuals with no other family members between. Medically, the degree of relationship is established by the number of shared genes. When referring to a specific individual in a pedigree (q.v.), any relative.