def make_fasta_dna_url(
        ensembl_release,
        species,
        contig,
        server=ENSEMBL_FTP_SERVER):
    """
    Construct URL to FASTA file with full sequence of a particular chromosome.
    Returns server_url/subdir and filename as tuple result.
    """
    ensembl_release, species, _ = \
        normalize_release_properties(ensembl_release, species)
    subdir = _species_subdir(
        ensembl_release,
        species=species,
        filetype="fasta",
        server=server,)
    server_subdir = urllib_parse.urljoin(server, subdir)
    server_sequence_subdir = join(server_subdir, "dna")
    filename = make_fasta_dna_filename(
        ensembl_release=ensembl_release,
        species=species,
        contig=contig)
    return join(server_sequence_subdir, filename)
Construct URL to FASTA file with full sequence of a particular chromosome.
    Returns server_url/subdir and filename as tuple result.