Table 2.

Nonsynonymous (Ka) and synonymous (Ks) substitution rates and estimated divergence time for paralogous BBX genes in Saccharum and sorghum

Paralogous pairs	Ka	Ks	Ka/Ks	Divergence time (Mya)
SsBBX1 vs. SbBBX1	0.026	0.067	0.380	5.522
SsBBX2 vs. SbBBX2	0.020	0.097	0.202	7.967
SsBBX3 vs. SbBBX4	0.063	0.112	0.561	9.206
SsBBX4 vs. SbBBX3	0.017	0.094	0.180	7.689
SsBBX5 vs. SbBBX5	0.029	0.154	0.187	12.655
SsBBX6 vs. SbBBX9	0.023	0.114	0.199	9.351
SsBBX7 vs. SbBBX11	0.015	0.087	0.175	7.109
SsBBX8 vs. SbBBX12	0.029	0.079	0.374	6.456
SsBBX10 vs. SbBBX8	0.007	0.062	0.110	5.056
SsBBX11 vs. SbBBX14	0.011	0.062	0.183	5.061
SsBBX12 vs. SbBBX6	0.035	0.080	0.436	6.535
SsBBX13 vs. SbBBX24	0.028	0.122	0.231	9.968
SsBBX15 vs. SbBBX13	0.025	0.067	0.376	5.452
SsBBX16 vs. SbBBX7	0.009	0.137	0.067	11.197
SsBBX17 vs. SbBBX15	0.034	0.110	0.313	9.013
SsBBX18 vs. SbBBX17	0.035	0.121	0.291	9.912
SsBBX20 vs. SbBBX16	0.038	0.118	0.322	9.703
SsBBX21 vs. SbBBX19	0.016	0.079	0.202	6.479
SsBBX22 vs. SbBBX18	0.063	0.115	0.551	9.408
SsBBX23 vs. SbBBX25	0.059	0.086	0.690	7.047
SsBBX24 vs. SbBBX23	0.069	0.209	0.332	17.092
SsBBX25 vs. SbBBX21	0.028	0.106	0.266	8.657