Table 1.
Estimates of the Numbers of Homeobox Genes in 11 Species and the MRCA of All 11 Species (Archi-MRCA)
| Nematodes
|
Insects
|
Teleosts
|
Rodents
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Archi-MRCA | Caenorhabditis elegans | Caenorhabditis briggsae | Fruitfly | Mosquito | Tunicate | Pufferfish | Zebrafish | Frog | Mouse | Rat | Humans | |
| Single-homeodomain proteins | 82 | 83 | 68 | 97 | 81 | 97 | 229 | 279 | 191 | 234 | 205 | 217 |
| Multihomeodomain proteins | (6) | 9 (30) | 2 (4) | 2 (5) | 2 (4) | 2 (5) | 10 (36) | 10 (37) | 7 (27) | 8 (27) | 11 (35) | 13 (40) |
| Total number of proteins (homeodomains) | (88) | 92 (113) | 70 (72) | 99 (102) | 83 (85) | 99 (102) | 239 (265) | 289 (316) | 198 (218) | 242 (261) | 216 (240) | 230 (257) |
Note.—The estimates of the numbers of homeobox genes are shown outside parentheses, and those of homeodomains are shown in parentheses. These two numbers are different because of multihomeodomain proteins.