... role in directing PCP in the wing. Thus, this study reveals that the two tissues use different strategies to orient their PCP. e-mail: [email protected] 28 10 2004 © 2004. 2004 Planar cell polarity Gradients Cadherins Drosophila Ommatidia Positional information...

... of the ommatidia in living animals. This allowed us to perform an F 1 genetic screen to isolate mutants affecting photoreceptor differentiation, survival or planar polarity. We illustrate the power of this detection system using known genetic backgrounds and new mutations that affect ommatidial differentiation...

... of the responding cells by Hedgehog itself. e-mail: [email protected] ) 16 03 1999 04 05 1999 © 1999 by Company of Biologists 1999 Drosophila Eye Atonal Hedgehog Ommatidia Mutations, insertions and transgenes used are described as the following: ptc IIw , smo 3...

...Marcel Wehrli; Andrew Tomlinson ABSTRACT The Drosophila retina is made from hundreds of asymmetric subunit ommatidia arranged in a crystalline-like array with each unit shaped and oriented in a precise way. One explanation for the precise cellular arrangements and orientations of the ommatidia...

...Françoise Chanut; Ulrike Heberlein ABSTRACT The Drosophila retina is a crystalline array of 800 ommatidia whose organization and assembly suggest polarization of the retinal epithelium along anteroposterior and dorsoventral axes. The retina develops by a stepwise process following the posterior...

... for Neurobiology and Behavior, Columbia University, College of Physicians and Surgeons, New York, NY 10032, USA Copyright © 1991 by Company of Biologists 1991 Drosophila ommatidia R7 photoreceptor cell sevenless signalling pathway Cell-cell interactions play an important role...