Identity by type - Citizendia

Alleles have identity by type (IBT) if they have the same phenotypic effect. An allele (ˈæliːl (UK /əˈliːl/ (US (from the Greek αλληλος allelos, meaning each other) is one member of a pair or series of different forms A phenotype is any observable characteristic of an Organism, such as its morphology, Development, biochemical or physiological properties

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. In biology mutations are changes to the Nucleotide sequence of the Genetic material of an organism Parent-offspring pairs share 50% of their genes IBD, and monozygotic twins share 100% IBD.

External links

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

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