A numeric vector storing the relative frequencies with names
\code{c("a", "c", "g", "t")}.
}
-\author{Emmanuel Paradis \email{Emmanuel.Paradis@mpl.ird.fr}}
+\author{Emmanuel Paradis}
\seealso{
\code{\link{GC.content}}, \code{\link{seg.sites}},
\code{\link{nuc.div}}, \code{\link{DNAbin}}