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The kinship coefficient is a simple measure of relatedness, defined as the probability that a pair of randomly sampled homologous alleles are identical by descent. [12] More simply, it is the probability that an allele selected randomly from an individual, i, and an allele selected at the same autosomal locus from another individual, j, are ...
In clinical genetics, consanguinity is defined as a union between two individuals who are related as second cousins or closer, with the inbreeding coefficient (F) equal or higher than 0.0156, where (F) represents the proportion of genetic loci at which the child of a consanguineous couple might inherit identical gene copies from both parents.
Chinese kin; Cinderella effect; Civil union; Cline (biology) Coefficient of inbreeding; Coefficient of relationship; Cognatic kinship; Collateral (kinship) Collateral descendant; Consanguinity; Consort kin; Cousin; Crow kinship
This is the Malecot's method of coancestry [1] (or "coefficient of kinship"; "coefficient of relationship" is a similar measure which can be computed) between genotype i and j. The probability that any pair of genes is IBD, Θ, can be found by adding over all possible pairs of genes from N parents.
In biology, "kinship" typically refers to the degree of genetic relatedness or the coefficient of relationship between individual members of a species (e.g. as in kin selection theory). It may also be used in this specific sense when applied to human relationships, in which case its meaning is closer to consanguinity or genealogy .
[2] [3] In the book Morgan argues that all human societies share a basic set of principles for social organization along kinship lines, based on the principles of consanguinity (kinship by blood) and affinity (kinship by marriage). At the same time, he presented a sophisticated schema of social evolution based upon the relationship terms, the ...
The coefficient of inbreeding (COI) is a number measuring how inbred an individual is. Specifically, it is the probability that two alleles at any locus in an individual are identical by descent from a common ancestor of the two parents.
The kinship coefficient decreases as a function of distance and if a mutation occurs in either locus or if the gamete kinship chain is zero, the kinship coefficient will be zero. Yoichi Ishida interprets alteration in neighborhood size as alteration in dispersal variance linking both Wright's statistical theory and Malécot's probabilistic ...