3 \title{Population Parameter THETA using Homozygosity}
5 theta.h(x, standard.error = FALSE)
8 \item{x}{a vector or a factor.}
9 \item{standard.error}{a logical indicating whether the standard error
10 of the estimated theta should be returned (\code{TRUE}), the default
14 This function computes the population parameter THETA using the
15 homozygosity (or mean heterozygosity) from gene frequencies.
18 a numeric vector of length one with the estimated theta (the default),
19 or of length two if the standard error is returned
20 (\code{standard.error = TRUE}).
23 The argument \code{x} can be either a factor or a vector. If it is a
24 factor, then it is taken to give the individual alleles in the
25 population. If it is a numeric vector, then its values are taken to be
26 the numbers of each allele in the population. If it is a non-numeric
27 vector, it is a coerced as a factor.
29 The standard error is computed with an approximation due to
30 Chakraborty and Weiss (1991).
33 Zouros, E. (1979) Mutation rates, population sizes and amounts of
34 electrophoretic variation at enzyme loci in natural
35 populations. \emph{Genetics}, \bold{92}, 623--646.
37 Chakraborty, R. and Weiss, K. M. (1991) Genetic variation of the
38 mitochondrial DNA genome in American Indians is at mutation-drift
39 equilibrium. \emph{American Journal of Human Genetics}, \bold{86}, 497--506.
41 \author{Emmanuel Paradis \email{Emmanuel.Paradis@mpl.ird.fr}}
43 \code{\link{heterozygosity}}, \code{\link{theta.s}}, \code{\link{theta.k}}