“…Two types of sequence variability are most commonly found in the control region of teleost fishes: nucleotide polymorphisms and variable numbers of copies of tandemly repeated sequences (Lee et al, 1995;Stepien and Kocher, 1997;Cesaroni et al, 1997). Nucleotide polymorphisms (point mutations) in the control region have been used to distinguish among species (e.g., Bermingham et al, 1986;Stepien, 1995;Phillips and Oakley, 1997;Turner, 1997; and population groups of fishes (e.g., Stepien, 1995;Sturmbauer et al, 1997;Nielsen et al, 1997;.…”