title: Evidence against close linkage of the loci for fraXq of Martin-Bell syndrome and for factor IX.
abstract: Linkage between the loci for fraXq of Martin-Bell syndrome and factor IX was studied in nine families exhibiting this syndrome by means of a restriction fragment length polymorphism at the factor IX locus. Computer analysis of the data indicates there to be no evidence for close linkage between the syndrome and the factor IX locus.
mesh_terms: D002873:Chromosome Fragility; D002874:Chromosome Mapping; D004262:DNA Restriction Enzymes; D015252:Deoxyribonucleases, Type II Site-Specific; D004587:Electrophoresis, Agar Gel; D005164:Factor IX / Q000235:genetics*; D005260:Female; D008040:Genetic Linkage; D005819:Genetic Markers; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D008297:Male; D010375:Pedigree; D013577:Syndrome; D014960:X Chromosome
chemical_list: D005819:Genetic Markers; D005164:Factor IX; D004262:DNA Restriction Enzymes; D015252:Deoxyribonucleases, Type II Site-Specific; C027046:TCGA-specific type II deoxyribonucleases