The δ-aminolevulinate dehydratase (ALADH) polymorphism was studied in the Upper Silesian population, Poland. The frequency of ALADH*1 was 0.9417, and ALADH*2 was 0.0583. No rare or anomalous phenotype was found. The distribution of phenotypes in 148 mother-child pairs was determined. Comparison with other world populations was made.
A silent allele of red cell acid phosphatase was found in three generations of a Polish family. The phosphatase levels of 4 family members were about half the normal value.
Blood samples from unrelated individuals were extracted using Kunkel's et al. (1) method with small modifications. DNA samples (2 to 5 ng) were amplified and typed according to manufacturer's instructions (2). Data were analyzed using a program provided by P. M. Miller (Northern Arizona University, Flagstaff, AZ). Htobs., Htexp., PD, MEC, MEP, and PIC were calculated using program provided by G. M. Dudek (Technical University of Czȩstochowa, Poland). The dataset can be accessed at: e-mail: medsad@slam.katowice. pl.
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