Cleavage, Hox genes & segmentation, etc. I'm not sure if everyone has
free access to PNAS online, but give it a go. Amongst a series of
interesting-looking state-of-the-play perspectives. There's also a Conway
Morris item on the Cambrian, an arthropod phylogeny & genes piece, and
a DNA animal phylogeny piece by Adoutte et al ("The demise of Articules
and the birth of Lophotrochozoa," etc).
http://www.pnas.org/content/vol97/issue9/index.shtmlhttp://www.pnas.org/cgi/content/full/97/9/4434
Proc. Natl. Acad. Sci. USA, Vol. 97, Issue 9, 4434-4437, April 25, 2000
Special Feature: Perspective Evolution of the bilaterian body plan: What
have we learned from annelids?
Marty Shankland and Elaine C. Seaver
Section of Molecular Cell and Developmental Biology, and Institute of
Cellular and Molecular Biology, University of Texas,
Austin, TX 78712
"Annelids, unlike their vertebrate or fruit fly cousins, are a bilaterian taxon
often overlooked when addressing the question of body plan evolution.
However, recent data suggest that annelids offer unique insights on the
early evolution of spiral cleavage, anteroposterior axis formation, body axis
segmentation, and head versus trunk distinction. "
--
Geoff Read <g.read at niwa.cri.nz>
-- ANNELIDA LIST
Discuss = <annelida at net.bio.net> = talk to all members
Server = <biosci-server at net.bio.net> = un/subscribes
Archives = http://www.bio.net/hypermail/annelida/
Resources = http://biodiversity.uno.edu/~worms/annelid.html
--
