Haplotypic and allelic variation in Brown-cheeked and Water Rails. Variable nucleotide positions found in a) 686 bp of the mitochondrial COI; b) 618 bp of the intron ADH5; and c) 746 bp of the nuclear exon PTPN12. Numbers above sequences correspond to nucleotide positions in the sequences. The frequency of haplotypes or alleles is shown in parentheses. Dots indicate nucleotide matches with the first sequence.