Second Degree Relative

Definition 1

Any relative who is two meioses away from a particular individual in a family; a relative with whom one quarter of an individual's genes is shared (i.e., grandparent, grandchild, uncle, aunt, nephew, niece, half-sibling) (from Genetics Home Reference glossary) (NCI Thesaurus)

Definition 2

Any individual related biologically or legally to another individual and considered one degree removed from the immediate family as in the case of in-laws, grandparents, aunts and uncles. (NCI Thesaurus/CDISC)

Definition 3

The aunts, uncles, grandparents, grandchildren, nieces, nephews, or half-siblings of an individual. (NCI Dictionary)

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