Mapping of anH-2-linked gene that influences mating preference in mice

In mating tests of B6 males, and of congenic B6-T1a^a males, with paired B6 and B6-T1a^a females, there was a preponderance of matings with B6-Th1a^a females in both cases. These results conform to a hypothesis that in theQa-T1a region there is anRi (recognition of identity) gene which is expressed in females and influences mating preference; and that anotherRi gene, expressed in males and also influencing mating preference, is situated elsewhere in the MHC region.Abbreviations according to Yamazakiet al. (1978)