... gene torso receptor tyrosine kinase neuroblast fate brain development transcription factor regulatory module Expression of the Drosophila tailless ( tll ) gene provides an instructive example of what has now become a generally accepted principle: many developmental regulatory genes...

... in experimental analysis of cis -regulatory systems at all levels of the regulatory network. * Author for correspondence (e-mail: [email protected] ) 14 03 1997 © 1997 by Company of Biologists 1997 gene regulation cis -regulatory element regulatory module transcription...