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  • Title: Polymorphic markers for the arylsulfatase A gene reveal a greatly expanded meiotic map for the human 22q telomeric region.
    Author: Brennan MD, Neibergs HL, Phillips K, Moseley S.
    Journal: Genomics; 2000 Feb 01; 63(3):430-2. PubMed ID: 10704291.
    Abstract:
    Two microsatellite markers, D22S1743 and D22S1744, were developed for the arylsulfatase A (ARSA) region of chromosome 22q. Linkage analysis for 171 families, using nine reference markers covering all of 22q, placed these new markers 2.0 Kosambi cM distal to D22S526, making them more distal than any microsatellite markers currently on the Généthon or Marshfield linkage maps. Recombination between proximal markers D22S270/D22S683 and D22S446/D22S311 exhibited increased rates of female meiotic recombination compared to male recombination (P < 0.01). In contrast, the region encompassing sJCW16, D22S526, D22S1743, and D22S1744 exhibited relatively greater recombination in males (1.1 cM for females and 7.5 cM for males; chi(2); P < 0.005). These four distal markers lie in a region of hyperrecombination having a sex-averaged recombination ratio of between 8.3 (D22S1843/D22S1744) and 12 cM (sJCW16/D22S526) per megabase.
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