Triplo-X constitution of mother explains apparent occurrence of two recombinants in sibship segregating at two closely X-linked loci (G6PD and deutan).
Two male sibs believed to be examples of meiotic recombinants between the closely linked loci for G6PD deficiency of Mediterranean type and severe deutan color blindness proved to be simple segregants of a triplo-X mother of genotype d--GdMediterranean/d+GdMediterranean/d+GdB. This finding suggests that in Sardinia the linkage between the two loci under consideration may be tighter than previously assumed.
D003117:Color Vision Defects / Q000235:genetics*; D005260:Female; D005796:Genes; D008040:Genetic Linkage; D005954:Glucosephosphate Dehydrogenase / Q000235:genetics*; D006801:Humans; D007558:Italy; D008297:Male; D010375:Pedigree; D011995:Recombination, Genetic; D012730:Sex Chromosomes; D014314:Trisomy; D014960:X Chromosome
D005954:Glucosephosphate Dehydrogenase