Any relative who is two meioses away from a particular individual in a pedigree; a relative with whom one quarter of an individual's genes is shared (i.e., grandparent, grandchild, uncle, aunt, nephew, niece, half-sibling)
SDR. An individual's relative who is an aunt, uncle, grandparent, grandchild, niece, nephew, or half-sibling.
grandparent, aunt, uncle or grandchild.
a relative with whom you share one-fourth of your genes, such as your half-siblings, aunts, uncles, nieces, nephews, and grandparents.
a relative that you share 1/4 of your genes with such as your aunts, uncles, nieces, nephews, and grandparents.