Protein variation in the plaice,<i>Pleuronectes platessa</i>L.

Abstract

SUMMARY Thirty-nine enzyme loci and seven non-enzymic protein loci have been screened for electrophoretically detectable variation in a population of Pleuronectes platessa , a marine flatfish. The mean heterozygosity per individual is 0·102 ± 0·026, or 0·118 ± 0·030 if the non-enzymic proteins are excluded. The distributions of allele frequencies and single locus heterozygosities are given, and the results discussed with reference to current theories concerning the nature of protein variation.