spider (version 1.2-0)

tajima.K: Calculate Tajima's K index of divergence

Description

Calculates Tajima's K index of divergence.

Usage

tajima.K(DNAbin, prop = TRUE)

Arguments

DNAbin

An object of class `DNAbin'.

prop

Logical. Should the function report the number of substitutions per nucleotide? Default of TRUE.

Value

• A vector of length 1. If prop = FALSE, the mean number of substitutions between any two sequences is returned. If prop = TRUE (the default), this number is returned as the mean number of substitutions per nucleotide (i.e. the above divided by the length of the sequences).

References

Tajima, F. (1983). Evolutionary relationship of DNA sequences in finite populations. _Genetics_ *105*, 437-460.

See Also

dist.dna.

Examples

data(anoteropsis)
tajima.K(anoteropsis)
tajima.K(anoteropsis, prop = FALSE)