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1 UNIVERSITY OF GEORGIA, ATHENS
1. The cell groups, representing the primordia of the ommatidia of the compound eye of Drosophila melanogaster, have been found in the four-day larva.
2. The fusion of the imaginal disks and the supra-esophageal ganglia take place on the third day of larval life.
3. There is a correlation between the development of the nervous system and the dioptric apparatus, as shown by the reduction in the size of the optic tract in the bar-eyed mutant.
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