The trackback URL for this entry is:

Trackbacks:

1. Hemichordate evo-devo
   
   Every biology student gets introduced to the chordates with a list of their distinctive characteristics: they have a notochord, a dorsal hollow nerve cord, gill slits, and a post-anal tail. The embryonic stage in which we express all of...
   Tracked on: Pharyngula (72.3.232.156) at 2006 01 12 11:51:48
2. Los gusanos espirales ya no son tan especiales
   
   Los animales con simetría bilateral se dividen en 2 grupos, protóstomos y deuteróstomos, dependiendo del destino del blastoporo (boca o ano, respectivamente). Los vertebrados, esos animales que comparten con nosotros el tener colum
   Tracked on: Evolucionarios (66.111.34.80) at 2005 03 17 11:23:35

<< Back to main