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The following is not yet installed! The Coifficient of Inbreeding (COI) The COI expresses common heritage and was first proposed by Sewell Wright in
1922. It can theoretically range from 0 to 100%, and
indicates the probability that the two alleles for any gene are identical
by descent.
The Coefficient of Relationship (RC)
The RC provides a way of objectively assessing the similarity of two
pedigrees by giving a number that is a direct measure of shared
ancestry. In most human populations, two individuals picked at random
would likely have a RC of 0, a brother and sister 50% and identical
twins 100%. Other relationships would fall between 0 and 50%.
The Kinship Coefficient
The fAB term in the RC equation is also called the 'kinship
coefficient' and can be used as a measure of relationship between two
individuals. It's computation is the same as that of COI for a
hypothetical litter.
