Orthology established by Bjarnadottir et al., 2005 (14 genes)

Orthology for casr ( Chr: 18 )
Orthology for gabbr1a ( Chr: 15 )
Orthology for gpr156 ( Chr: 9 )
Orthology for gprc6a ( Chr: 16 )
Orthology for grm2b ( Chr: 11 )
Orthology for grm6a ( Chr: 8 )
Orthology for tas1r1 ( Chr: 23 )