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Seventeen linking clones sublocalized to the central region of the mouse X Chromosome (Chr) were screened against genomic DNA from male mice carrying the tabby-25H (Ta25H) deletion. Two of these linking clones, lambda EM131 and lambda EM169, were found to be deleted in Ta25H/Y animals. Genetic mapping through Mus musculus domesticus/Mus spretus interspecific backcross progeny, segregating for the original tabby (Ta) gene mutation, was utilized to order these markers and to define nearest flanking markers to the Ta25H deletion (lambda EM140 and lambda EM171). The size of the Ta25H deletion was thus estimated as up to 4.5 centiMorgans (cM). The order of markers, proximal to distal, was found to be lambda EM140/lambda EM131, mouse androgen receptor gene (Ar)/lambda EM169, Ta/lambda EM171. A putative CpG-rich island and a highly evolutionarily conserved DNA probe were isolated from the DXCrc169 locus which co-segregates with the Ta locus in this study.


Journal article


Mamm Genome

Publication Date





152 - 157


Animals, Chromosome Deletion, Crosses, Genetic, Ectodermal Dysplasia, Mice, Restriction Mapping, Sex Differentiation, Translocation, Genetic