The relative frequencies of the four nucleotides (nucleotide composition) or of the 20 amino acid residues (amino acid composition) can be computed for one specific sequence or for all sequences. For the coding regions of DNA, additional columns are presented for the nucleotide compositions at the first, second, and third codon positions. All results are presented domain-by-domain, if the dataset contains multiple domains. Results for the amino acid composition are presented in a similar tabular form.