Identity by type

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Alleles have identity by type (IBT) if they have the same phenotypic effect.

Alleles that are identical by type fall into two groups; those that are identical by descent (IBD) because they arose from the same allele in an earlier generation; and those that are non-identical by descent (NIBD) because they arose from separate mutations. Parent-offspring pairs share 50% of their genes IBD, and monozygotic twins share 100% IBD.

[edit] External links

• http://darwin.eeb.uconn.edu/eeb348/lecture-notes/identity.pdf
• http://zwets.com/pedkin/thompson.pdf

This genetics article is a stub. You can help Wikipedia by expanding it.

Categories: Classical genetics | Genetics stubs

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• This page was last modified 12:46, 28 March 2008 by Wikipedia user Aliekens. Based on work by Wikipedia user(s) Ceyockey, Lexor and Duncharris and Anonymous user(s) of Wikipedia.
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