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Demonstration of a sex difference in recombination fraction in the loose linkage, Rh and PGM1

Renwick (1971) has reported that there is a measurable linkage between the locus for the rhesus blood group and phosphoglucomutase locus 1. He attempted to estimate the map distance between these two loci because Weitkamp, Guttormsen & Greendyke (1971) had demonstrated that the loci for R h and phosphogluconate dehydrogenase are linked, and in vitro studies on man/ hamster hybrids by Westerveld, Visser, Meera Khan & Bootsma (1971) had shown a high correlation in loss or retention of human PGM, and PGD in different clones. Renwick estimates the Rh: PGM, interval as 0.27 M. ignoring sex differences, with 95 % probability limits of 0.16 and 0.43. In this paper we shall present the results of a linkage analysis on Rh and PGM, which support this contention. MATERIAL AND METHODS