ABSTRACT
The control of oogenesis in flies is a highly complex and regulated process. The final product, the mature egg with a defined anterior-posterior and dorsal-ventral polarity capable of supporting embryogenesis, results from a complex interplay between the nurse cells, the oocyte and the surrounding somatic follicle cells. Superimposed upon this stepwise morphogenesis is a need to interact with the environment. Eggs are produced in relation to the available nutrition, suitable laying substrates and other environmental factors. Additionally, the rate of oocyte maturation depends upon whether or not a female has recently mated.
