Orthology established by Schweitzer et al., 2006 (12 genes)

Orthology for gpm6aa ( Chr: 14 )
Orthology for gpm6ab ( Chr: 1 )
Orthology for gpm6ba ( Chr: 1 )
Orthology for gpm6bb ( Chr: 9 )
Orthology for plp1a ( Chr: 14 )
Orthology for plp1b ( Chr: 5 )