Polymorphism of serum transferrin in cod

Abstract

Sera from 682 cod from six different localities along the Norwegian coast and in the Barents Sea have been investigated by starch/agar gel electrophoresis. Eleven different patterns composed by five molecular types have been found. By autoradiography it has been demonstrated that four of them are ironbinding proteins. The distributions of the observed transferrin patterns were in agreement with distributions expected according to the Hardy-Weinberg formula, implying that the bands have their origin in five codominant alleles.