Abstract

Genomic sequences derived from the mouse t complex by a microdissection cloning technique have been used as tools to obtain high resolution genetic maps of the wild-type and t haplotype forms of the most proximal portion of chromosome 17. Genetic mapping was performed through a recombinant inbred strain analysis and an analysis of partial t haplotypes. The accumulated data demonstrate the existence of a large inversion of genetic material, encompassing the loci of T and qk, within the proximal portion of t haplotypes. This newly described proximal inversion and the previously described distal inversion provide an explanation for the suppression of recombination observed along the length of t haplotype DNA in heterozygous mice.

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