... and magenta boxes indicate the regions of the eye examined in equatorial and polar sections, respectively, throughout the paper.(B) Dorsal (green arrows) and ventral (red arrows) ommatidia shown in apical(left) and basal sections of the eye. The gray structures are the rhabdomeres of the indicated...

... 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. 16 03 1999 04 05 1999 © 1999 by Company of Biologists 1999 Drosophila Eye Atonal Hedgehog Ommatidia e-mail: [email protected] ) The differentiation of cells in the Drosophila eye begins at the posteriormost edge...

...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...

... . Genes Dev . 2 , 620 – 634 . 10.1101/gad.2.6.620 Bowtell , D. D. L. , Simon , M. A. and Rubin , G. M. ( 1989 ). Ommatidia in the developing Drosophila eye require and can respond to sevenless for only a restricted period . Cell 56 . 931 – 936 . 10.1016/0092-8674(89...