Orthology established by Dalton et al., 2013 (8 genes)

Orthology for arhgef4 ( Chr: 2 )
Orthology for arhgef6 ( Chr: 14 )
Orthology for prex1 ( Chr: 8 )
Orthology for prex2 ( Chr: 24 )
Orthology for tiam1a ( Chr: 10 )
Orthology for tiam1b ( Chr: 15 )
Orthology for tiam2a ( Chr: 17 )
Orthology for tiam2b ( Chr: 20 )