Obvious 1:1 orthologous regions. Also has a "haze" of secondary synteny is due to the most recent vertebrate whole genome duplication even (1R). There is an older whole genome duplication too (2R).
Obvious 2:2 depth.
Share a recent whole genome duplication. Also share older whole genome duplictions (at least one)
1:1 orthologous regions. Secondary syntenic "haze" form 1R.