A dibling, a portmanteau of donor sibling,[1][2] or donor-conceived sibling,[3] or donor-sperm sibling,[4] is one of two or more individuals who are biologically connected through donated eggs or sperm.[5][6][7][8][9] The term is not favored among some donor-conceived people, who prefer the use of half-sibling.[10] People born from anonymous or ID release sperm or egg donation are able to find half-siblings conceived using the same gamete donor online through the Donor Sibling Registry[5] or by using commercially-available DNA test kits. DNA testing is more accurate because it relies on comparison of single-nucleotide polymorphisms instead of gamete donor identification numbers (which may be erroneous).
Original source: https://en.wikipedia.org/wiki/Dibling.
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