GENIC HETEROGENEITY AT TWO ALCOHOL DEHYDROGENASE LOCI IN DROSOPHILA PSEUDOOBSCURA AND DROSOPHILA PERSIMILIS

摘要: A sequential electrophoretic survey of the second chromosome loci, alcohol dehydrogenase-6 ( Adh-6 ) and octanol dehydrogenase Odh ), was performed on 147 isochromosomal lines Drosophila pseudoobscura 60 its sibling species, D. persimilis . Gels run with a variety acrylamide concentrations buffer pH's revealed presence 18 alleles in two where only eight had been previously detected by conventional methods. Only were added our techniques to previous total nine both species at largely monomorphic locus. Both enzymes show predominance one allele, other variants being fairly rare. There no evidence increased genetic divergence between but we found striking increase differentiation main body populations conspecific isolate from Bogota, Colombia. These results are compared surveys xanthine these discussed reference theories genic polymorphism.