Chapter 6:The Best-Laid (Body) Plans

What I find most interesting about this chapter is the way it mentioned the whole development of species and how they evolve from embryos into adults. Most embryos look the same as different species when first conceived, but as time passes, they start to take on their own destinctive shapes and characteristics while all going through the same stages of development. It was surprising to read how flies are a fundamental choice to study as to relate to the human's embryo plan. I also found that the type of mutations that flies go through were very unique to read about and nonetheless interesting:"a leg where an antenna should have been;an extra set of wings-or were missing body segments" (108).

On the last page of this chapter it again mentioned the Noggin with experiments of injections into embryos. What I found most fascinating was that if Noggin from one type of animal, such as a frog is injected into another, a sea anemone it would result with the same affect as a frog and a frog. Altogether this chapter made me realize that although only a fraction of our lives, the embryo stage is one of the most important processes we could go through in life. For in those few couple months our body plans our laid out for the rest of our lives.