3 \title{Content in GC from DNA Sequences}
8 \item{x}{a vector, a matrix, a data frame, or a list which contains
12 This function computes the percentage of G+C in a sample of DNA sequences.
15 The percentage of G+C is computed over all sequences in the
16 sample. All missing or unknown sites are discarded from the
17 computations. The present function actually uses the function
21 A single numeric value is returned.
23 \author{Emmanuel Paradis}
25 \code{\link{base.freq}}, \code{\link{seg.sites}},