Saved Bookmarks
| 1. |
Phayngeal fill slits are absent in |
|
Answer» ong>ANSWER: applying EXCESS retinoic acid (excess retinoic acid in vertebrates results in pharyngeal abnormalities) LEADS to the absence of gill slits in developing Amphioxus, SUGGESTING that retinoic acid may ACT through the same mechanism in vertebrates and amphioxus. |
|