Table 4. Co-occurrence of the eukaryotic genomes in the COGs.
| Numbers of COGs | Eukaryotic species | ||
| 578 | C.elegans | D.melanogaster | S.cerevisiae |
| 99 | C.elegans | D.melanogaster | |
| 38 | C.elegans | S.cerevisiae | |
| 46 | C.elegans | ||
| 77 | D.melanogaster | S cerevisiae | |
| 44 | D.melanogaster | ||
| 166 | S.cerevisiae |