Extended Data Fig. 2: Genome-wide syntenic relationships among A. chinensis, A. rufa, A. polygama, and A. arguta.

Syntenic blocks were defined based on conserved physical order of homologous gene pairs (<1e^-50), using MCSanX (Wang et al. 2012) with default parameters. Basic collinearity was conserved amongst the four species for most chromosomes, although some chromosomes exhibited large scale inversions or translocations (for example, Chr19 and 23).