Abstract
A genetic linkage map for human chromosome 3 has been constructed using 41 polymorphic DNA markers genotyped in 40 CEPH reference families. The map spans a genetic distance of 261 cM in males and 413 cM in females; the ratio of these distances (approximately 1.6 in favor of female meioses) was fairly constant across the map. Frequency of recombination was relatively uniform throughout much of the chromosome, except that in both telomeric regions recombination was more frequent than the physical distances would predict. The genetic map was basically in agreement with physical localization of 24 loci that were mapped by fluorescent in situ hybridization. This map can be used for linkage studies for genetic diseases, and it will serve as a step toward a high-resolution map for human chromosome 3.
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