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- Asap what evolutionary advantages does the amniotic egg have? explain how each component of the egg plays a role in survival of the embryo.Qq4. When doctors discuss prenatal development, they often calculate the due date from the first day of menstruation. In fact, the baby’s gestational age is calculated from the first day of menstruation. At a maternity clinic, an obstetrician mentions that when a woman is 10 weeks pregnant, the baby is referred to as a fetus.Which of the following is the correct calculation of the baby’s age from the moment of fertilization, assuming a 28-day ovarian cycle? a. The baby is 8 weeks old. This is when organ formation has completed. b. The baby is 10 weeks old as stated by the doctor. .Q5. Create a scratch simulation model that describes sex determination in humans at random. Remember xx is a girl and xy is
- IDENTIFICATION (Subject - Development Biology) 1. It is a historical transformation of the forms of life starting from the simple forms of the past to the complex forms of the present? 2. This is formed when small group of cells segregate from another group of cells? 3. Its a process when one embryonic region interacts with the second and affects the second regions differentiation or behaviour?IDENTIFICATION (Subject - Development Biology) 1. It refers to the arrangement of the mitochondria, golgi apparatus, yolk and pigment granules? 2. It shows the organ forming tissues? 3. It is a genes which are active all throughout developmentVisit this site (http://openstaxcollege.org/l/pregstages) for a summary of the stages of pregnancy, as experienced by the mother, and view the stages of development of the fetus throughout gestation. At what point in fetal development can a regular heartbeat be detected?
- Compare the advantages and disadvantages of amniocentesis versus chorionic villus sampling for prenatal diagnosis.Trace the development of a human egg and trace its passage through the female reproductive system until it is fertilized.MAKE CONNECTIONS Unlike some other types of birthdefects, neural tube defects are largely preventable.Explain (see Figure 41.4).
- Q1: Which is the faster way to produce vaccines: biopharming with plants or creating vaccines in eggs? Why is this important? Q2: How much cheaper is biopharming with plants than creating vaccines in eggs? Why is this important? Q3: Why must tobacco-derived vaccines, or any new medications for that matter, be approved by the FDA?QUESTIONS 1. In a developing Chicken embryo, why is the chorioallantoic membrane used in embryologic experiments? 2. In a developing chicken embryo, what mesoderm lines the amniotic cavity?WHAT IF? If a sperm nucleus is injected into an oocyte,what steps of gametogenesis and conception arebypassed?