A dibling, a

portmanteau A portmanteau word, or portmanteau (, ) is a blend of wordssibling A sibling is a relative that shares at least one parent with the subject. A male sibling is a brother and a female sibling is a sister. A person with no siblings is an only child. While some circumstances can cause siblings to be raised separat ...

, or donor-conceived sibling, or donor-sperm sibling, is one of two or more individuals who are biologically connected through

donated eggs Egg donation is the process by which a woman donates eggs to enable another woman to conceive as part of an assisted reproduction treatment or for biomedical research. For assisted reproduction purposes, egg donation typically involves in vitro fe ...

sperm Sperm is the male reproductive cell, or gamete, in anisogamous forms of sexual reproduction (forms in which there is a larger, female reproductive cell and a smaller, male one). Animals produce motile sperm with a tail known as a flagellum, whi ...

. The term is not favored among some donor-conceived people, who prefer the use of

half-sibling A sibling is a relative that shares at least one parent with the subject. A male sibling is a brother and a female sibling is a sister. A person with no siblings is an only child. While some circumstances can cause siblings to be raised separat ...

. 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 The Donor Sibling Registry is a website and non-profit US organization serving donor offspring, sperm donors, egg donors and other donor conceived people. It was founded in September 2000 by a mother-and-son team, Wendy Kramer and Ryan Krame ...

or by using commercially-available DNA test kits. DNA testing is more accurate because it relies on comparison of

single-nucleotide polymorphisms In genetics, a single-nucleotide polymorphism (SNP ; plural SNPs ) is a germline substitution of a single nucleotide at a specific position in the genome. Although certain definitions require the substitution to be present in a sufficiently larg ...

instead of gamete donor identification numbers (which may be erroneous).

References

{{Assisted reproductive technology Fertility medicine Sperm donation Kinship and descent Sibling

See also

References