Chapter 3 - Handy Genes 1. Many experiments were conducted during the 1950s and 1960s with chick embryos and they showed that two patches of tissue essentially controlled the development of the pattern of bones inside limbs. Describe at least one of these experiments and explain the significance of the findings. 2. Describe the using several animal examples. Be sure to explain its’ function and its’ region of hedgehog gene activity in the body. Chapter 4 - Teeth Everywhere Teeth make great fossils - why are they hard as rocks?” What are conodonts? “as Shubin writes that would never have scales, feathers, and breasts if we didn’t have teeth in the first “we place.” (p. 79) Explain what he means by this statement. Chapter 5 - Getting Ahead Why are the trigeminal and facial cranial nerves both complicated and strange in the human body? List the structures that are formed from the four embryonic arches (gill arches) during human development. What are genes and why are they so important? Hox is a small invertebrate yet is an important specimen for study why? Be sure to include Amphioxus – characteristics that share with this critter! you Chapter 6 - The Best Laid (Body) Plans Early embryonic experiments in the 1800s led to the discovery of three germ layers. List their names and the organs that form from each. Describe the blastocyst stage in embryonic development. What is meant by recapitulates phylogeny?” “ontogeny What type of gene is and what is its function in bodies? Noggin Sea anemones have radial symmetry while humans have bilateral symmetry but they still have “similar” body plans explain... – Chapter 7 - Adventures in Bodybuilding Refer to the timeline on p.121 in what is most surprising to you about the timescale? Your Inner Fish – Explain your choice. What is the most common protein found in the human body? Name it and describe it. Explain how cells to one another; give at least one example. “stick” How do cells (generally) communicate with one another? What are choanoflagellates and why have they been studied by biologists? What are some of the reasons that might have developed in the first place? Include any “bodies” environmental conditions that might have favored their evolution. Chapter 8 - Making Scents Briefly explain how we perceive a
Chapter 3 - Handy Genes 1. Many experiments were conducted during the 1950s and 1960s with chick embryos and they showed that two patches of tissue essentially controlled the development of the pattern of bones inside limbs. Describe at least one of these experiments and explain the significance of the findings. 2. Describe the hedgehog gene using several animal examples. Be sure to explain its’ function and its’ region of activity in the body. Chapter 4 - Teeth Everywhere Teeth make great fossils - why are they “as hard as rocks?” What are conodonts? Shubin writes that “we would never have scales, feathers, and breasts if we didn’t have teeth in the first place.” (p. 79) Explain what he means by this statement. Chapter 5 - Getting Ahead Why are the trigeminal and facial cranial nerves both complicated and strange in the human body? List the structures that are formed from the four embryonic arches (gill arches) during human development. What are Hox genes and why are they so important? Amphioxus is a small invertebrate yet is an important specimen for study – why? Be sure to include characteristics that you share with this critter! Chapter 6 - The Best Laid (Body) Plans Early embryonic experiments in the 1800s led to the discovery of three germ layers. List their names and the organs that form from each. Describe the blastocyst stage in embryonic development. What is meant by “ontogeny recapitulates phylogeny?” What type of gene is Noggin and what is its function in bodies? Sea anemones have radial symmetry while humans have bilateral symmetry but they still have “similar” body plans – explain... Chapter 7 - Adventures in Bodybuilding Refer to the timeline on p.121 in Your Inner Fish – what is most surprising to you about the timescale? Explain your choice. What is the most common protein found in the human body? Name it and describe it. Explain how cells “stick” to one another; give at least one example. How do cells (generally) communicate with one another? What are choanoflagellates and why have they been studied by biologists? What are some of the reasons that “bodies” might have developed in the first place? Include any environmental conditions that might have favored their evolution. Chapter 8 - Making Scents Briefly explain how we perceive a