Further alleles of phosphoglucomutase in human semen detected by isoelectric focusing

A technique for identifying further alleles of PGM1 in human semen detected by isoelectric focusing has been described. A survey of 100 semen samples has shown that there was close agreement between the observed and expected gene frequencies of these new alleles on the basis that there were four common alleles determined by the PGM1 locus and not two as originally proposed [1,2]. The use of these new genetic variatns of PGM will considerably enhance the investigation of semen stains in forensic science.