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Other authors have suggested that the MN-locus is on the long arm of either chromosome 2 or 4 and that the hemoglobin β-locus is on the long arm of a B group chromosome. Ananalysis of new pedigree data together with previously reporteddata hints loose linkage between the hemoglobin β- and MN-loci.
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Weitkamp et al. (1972) studied this question.
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