Genetic polymorphism of the LW blood group system

Abstract
Family studies of rare LW(a-b+) propositi confirm the recent finding based on frequency studies that the LW blood groups are polymorphic in Finland (Sistonen & Tippett, 1982); they are controlled by two alleles LWa (0.97) and LW* (0.03) independent from most other common blood group loci. Loci scores for LW and the loci for 27 markers are presented.