Abstract
The Gm serum groups in man have been investigated serologically and genetically. Two populations have been studied. In Great Britain the frequency of the Gm (a+) phenotype is 60.98 per cent. In the Ferrara district of Italy the frequency is 40.18 per cent. Family studies in both populations support the hypothesis that the Gm (a+) phenotype is determined by a gene which is expressed in the heterozygote.
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Selected References
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