A Dictionary of Genetics
The head of a fruitfly, Drosophila melanogaster, viewed by scanning electron microscopy. Targeted expression of the eyeless gene has induced the formation of a cluster of eye facets on the distal segment of the antenna, which lies in front of the compound eye. For further details, consult the eyeless entry. (Reprinted with permission from Walter Gehring and from Science, Vol. 267, No. 5205, 24 March 1995. Photo by Andreas Hefti and George Halder. © 1995, American Association for the Advancement of Science.)
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