ch 6 : the best laid body plans

in this chapter they compare embryos between fish and chicken. This chapter showed how embryos start forming the same. all embyos form in the same pattern, but become different species.I learned in this chapter about the problems thqat can happen when being fertilized with a uterus. A lot of complications can happen, it can be really dangerous. They explained the tube within a tube heory and it made sense, I was interested in the three layers, known as ectoderm, endoderm, and mesoderm. I never knew about that. It was interesting to learn how Mangold discovered Organizer, I feel that it sucked to have someone else take credit, the person who took credit was Spemann. The chapter also introduced Hox gens. It ia found in every animal with a body.The diagrams were very interesting in this chapter. especially, the diagram of a human to an anemone. I also wonder about the jellyfish theory. The flies was also interesting, especially since they can have faults in being born and formed. We however, can have that happen du to malfunctions in genes. We can sometimes grow a leg in a wrong area or an extra arm, but those cases are very rare. this chapter was very interesting and I look forward to the next.