# Hs: Expected heterozygosity (Hs) In adegenet: Exploratory Analysis of Genetic and Genomic Data

## Description

This function computes the expected heterozygosity (Hs) within populations of a genpop object. This function is available for codominant markers (@type="codom") only. Hs is commonly used for measuring within population genetic diversity (and as such, it still has sense when computed from haploid data).

## Usage

 1 Hs(x, pop = NULL) 

## Arguments

 x a genind or genpop object. pop only used if x is a genind; an optional factor to be used as population; if not provided, pop(x) is used.

## Details

Let m(k) be the number of alleles of locus k, with a total of K loci. We note f_i the allele frequency of allele i in a given population. Then, Hs is given for a given population by:

\frac{1}{K} ∑_{k=1}^K (1 - ∑_{i=1}^{m(k)} f_i^2)

## Value

a vector of Hs values (one value per population)

## Author(s)

Thibaut Jombart t.jombart@imperial.ac.uk

Hs.test to test differences in Hs between two groups
 1 2 3 4 5 ## Not run: data(nancycats) Hs(genind2genpop(nancycats)) ## End(Not run)