ip_F {purgeR}

Inbreeding coefficient

Description

Computes the standard inbreeding coefficient (F). This is the probability that two alleles on a locus are identical by descent (Falconer and Mackay 1996, Wright 1922), calculated from the genealogical coancestry matrix (Malécot 1948).

Usage

ip_F(ped, name_to = "Fi")

Arguments

ped

A dataframe containing the pedigree. Individual (id), maternal (dam), and paternal (sire) identities are mandatory columns.

name_to

A string naming the new output column.

Value

The input dataframe, plus an additional column with individual inbreeding coefficient values (named "Fi" by default).

References

• Falconer DS, Mackay TFC. 1996. Introduction to Quantitative Genetics. 4th edition. Longman, Essex, U.K.

• Malécot G, 1948. Les Mathématiques de l’hérédité. Masson & Cie., Paris.

• Wright S. 1922. Coefficients of inbreeding and relationship. The American Naturalist 56: 330-338.

See Also

exp_F

Examples

data(dama)
dama <- ip_F(dama)
tail(dama)