func addToMSA(sequences chan seq.Sequence, msa *seq.MSA) {
wgSeqFragments.Add(1)
go func() {
for s := range sequences {
// We don't use Add or AddFasta since both are
// O(#sequences * #frag-length), which gets to be quite slow
// in the presence of a lot of sequences.
//
// The key here is that we know that every sequence has the same
// length and is in the same format, so we can add entries in a
// straight forward manner.
msa.Entries = append(msa.Entries, s)
}
wgSeqFragments.Done()
}()
}
