Jawless Fish: Do Larvae or Adults Show Key Chordate Features in Biology?
The larva of jawless fish displays key chordate features, including a notochord, a dorsal hollow nerve cord, and a post-anal tail. In contrast, adult jawless fish usually lose these structures but may still have pharyngeal slits, which indicates their classification as chordates. As they mature into adults, these features evolve, enabling jawless fish to adapt … Read more