Consider the principles you have been exposed to from thestudies of Drosophila embryogenesis. This does NOT mean describethe stages of Drosophila embryogenesis. Another way to think of itis: taking into account what you’ve learned about Drosophilaembryogenesis/development, what are some of the general rules orrequirements of ALL development (not just Drosophila, but useDrosophila as an example in the supporting sentence.
an example would be Communication is essential. Could be betweencells or between cells and the environment. This refers to theprocess of induction.
three principles that are simple and essential to Drosophila