Explain the developmental and functional similarities and differences between:   1. Avian yolk sacs and mammalian yolk sacs   2. Avian chorions and mammalian chorions 3. Avian allantois and mammalian allantois

Describe each of the following early embryonic development stages of the human: a. zygote (fertilization) b. cleavage c. morula d. blastula (blastocyst) e. gastrulation (gastrula) f. organogenesis Name the three embryonic layers produced during gastrulation and the adult tissue formed from each. Note whether each of the following get bigger, smaller, or stay the same through cleavage: Mass (size of entire structure) b. size of individual cells c. number of cells a. State what the following structures will form during embryonic development: inner cell mass b. outer cell layer/trophoblast Describe the functions of the placenta during gestation and explain the relationship between fetal and maternal blood. Describe the 3 stages to labor and the effects of oxytocin and prostaglandins during these stages. Detail the effects of prolactin and oxytocin on lactation Animal Behavior Define innate and learned behavior and give an example of each. Discuss the different ways members of a population…

Compare and contrast the three types of mammals with respect to fetal development and birth: the monotremes (such as the platypus), the marsupials (such as kangaroos), and the placentals (such as humans or dogs). That is, where does most of the early development occur, how is the young mammal introduced to the world, and how does the young obtain nourishment once introduced to the world?

33. In words and/or a diagram, describe the molecular components of the developmental timing mechanism responsible for the formation of somites of the proper size and placement within the chick embryo. Make sure to include in your answer how the molecular components are coordinated by growth of the embryo to control somite formation: ? How How could this developmental timing mechanism be manipulated to produce longer somites could this developmental timing mechanism be manipulated to increase the rate of somite production ( ,?