purgeR (version 1.8.2)

exp_Fa: Expected ancestral inbreeding coefficient

Description

Estimates the expected ancestral inbreeding coefficient (Fa) as a function of the effective population size and generation number

Usage

exp_Fa(Ne, t)

Value

The ancestral inbreeding coefficient

Arguments

Ne

Effective population size

t

Generation number

Details

Computation of the ancestral inbreeding coefficient uses the adaptation from Ballou's (1997) formula, as in López-Cortegano et al. (2018):

Fa(t) = 1 - (1 - 1/2N) ^ (1/2 (t-1)t)

References

• Ballou JD. 1997. Ancestral inbreeding only minimally affects inbreeding depression in mammalian populations. J Hered. 88:169–178.

• López-Cortegano E et al. 2018. Detection of genetic purging and predictive value of purging parameters estimated in pedigreed populations. Heredity 121(1): 38-51.

See Also

ip_Fa

Examples

exp_Fa(Ne = 50, t = 0)
exp_Fa(Ne = 50, t = 50)
exp_Fa(Ne = 10, t = 50)