REGULATION OF VITELLOGENESIS IN DROSOPHILA

During vitellogenesis the 3 major yolk proteins of Drosophila are synt hesized and transported from the tissues which produce them to the ooc yte. Here they are endocytosed by the oocyte and stored in yolk granul es for utilization during embryogenesis. In this paper the regulation of vitellogenesis is discussed, including the tissue-specific and horm onal regulation of the yolk protein genes; transport of yolk proteins to the oocyte; storage of the proteins; and their possible functions d uring embryogenesis.