Abstract
We have used a cDNA probe for mouse Gf-1 gene that encodes the erythroid cell transcription factor to identify genetic variation in genomic DNA between Mus species. The segregation of Gf-1 DNA variation was analyzed in Mus species crosses that have been previously typed for the segregation of more than 30 genes spanning 80 cM of the mouse X chromosome from the centromere to the border of the X-Y pairing region. We identified a single X chromosome locus in the mouse, Gf-1, and an analysis of recombinants from 203 backcross progeny mapped Gf-1 to the proximal portion of the chromosome, coincident with the Cybb locus and proximal to Otc gene locus. A gene order of centromere, DXWas70, Cybb Gf-1 , Otc, Timp was established for the mouse X chromosome, which is in agreement with the map position observed on the human X chromosome.
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