Uffe Hellsten on the first frog genome, X. tropicalis

submitted by: JGI

DOE JGI's Uffe Hellsten, first author of the April 30, 2010 Science publication about the first amphibian genome to be sequenced, talks about the importance of the African clawed frog.

The Origin of Vertebrates - Part 2: Telling the Back from the Front or What the Chordates Invented (27:47)

submitted by: video_collector

In Part 2: Telling the back from the front or what the chordates invented, Marc Kirschner (Harvard Medical School) discusses why we look like invertebrate animals turned upside down, i.e. vertebrates have their central nervous system on their backs and invertebrates have it on their bellies.