Mating preference tests with the recombinant congenic strain BALB.HTG

Tests of MHC-associated mating preference were conducted with the congenic mouse strains BALE (H-2 ^d), BALB.B (H-2 ^b), and BALB.HTG (recombinant ofH-2 ^d andH-2)^b. The results conform to a hypothesis that anRi gene (Ri-1), the expression of which influences mating preference in females, is situated to the right of theS region; and that anotherRi gene (Ri-2), the expression of which influences mating preference in males, is situated elsewhere, probably to the left ofH-2D. This hypothesis is consistent with conclusions previously reached from study of the mating preferences of B6 and B6-Tla^a congenic mice.Abbreviations according to Yamazaki et al. (1978) Ri recognition of identity