... switch mediates this functional change. * Author for correspondence (e-mail: [email protected] ) 04 12 2001 07 02 2001 © 2001 by Company of Biologists 2001 Gene regulation Computational model Gene transfer Sea urchin The information processing...

... Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA © 1991 by Company of Biologists 1991 in vivo competition commitment specification gene transfer gene regulation in early development The early blastula of the sea urchin Strongylocentrotus purpuratus...

... tends to occur in a mosaic fashion ( Flytzanis et al . 1985 ; Hough-Evans et al . 1987 ), the response observed in such cases might be quantitatively less impressive. Nonetheless, it is now evident that, at least for genes utilized early on, the cytoplasmic gene transfer system of McMahon et al...