Table 1.

Data Sets Used in This Study

(A) Numbers of CDSs in the three domains of life from the UniProtKB database are shown
	Eukarya	Bacteria	Archaea	Others	Total
Species	1,259,362	486,584	13,015	193,814	1,952,775
CDS	32,407,431	96,898,645	2,980,127	5,485,853	137,772,065

(B) Numbers of CDSs in the three domains of life determined from complete genomes in the RefSeq database are shown
	Eukarya	Bacteria	Archaea
Species	288	1,543	140
CDS	8,534,278	5,131,344	336,764