Summary
More than 30 unrelated individuals were analysed by pulse field gel electrophoresis for the alphoid centromeric sequences of chromosomes 13 and 21. These individuals had DNA patterns all different from each other and were most probably heterozygous at both loci. When several nuclear families were analysed in this manner, segregation was shown to be Mendelian, and no recombination event was detected over the 150 meioses scored in this study. Alphoid DNA sequences, therefore, constitute highly polymorphic centromeric markers, which can be used in linkage analysis for loci close to the centromeres of chromosomes 13 and 21.
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Marçais, B., Bellis, M., Gérard, A. et al. Structural organization and polymorphism of the alpha satellite DNA sequences of chromosomes 13 and 21 as revealed by pulse field gel electrophoresis. Hum Genet 86, 311–316 (1991). https://doi.org/10.1007/BF00202418
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DOI: https://doi.org/10.1007/BF00202418