I have 4 case study that i need help i already upload i need to done by june 2

Bio 2256

Name:____________________________________________

Case Study 6

Below are two (2) narratives on development answer the questions associated with each. You may work in small groups, but make sure that each team member turns in a sheet with their name on it. Feel free to ask questions to clarify any of the information below. A superhero feel for today.

1: Barbie and Ken are planning a family. After much trying Barbie becomes pregnant.

Question 1: Explain the steps of fertilization, how the sperm prepare for fertilization (capacitation), how one penetrates the egg, how one sperm binds, and the mechanisms that prevent polyspermy.

Question 2: Explain the process of cleavage, the stages that are formed, which stage implants in the uterus and the basics of implantation.

2: Bruce and Diana are expecting their first child and Diana is only a few weeks pregnant.

Question 1: Explain the process of gastrulation that Diana’s embryo is undergoing, the germs layers that are produced, and what they will later give rise to.

Question 2: Explain the process of organ development, the process of neurulation, the importance of somites and what the different layers form, and the importance of the primitive gut and coelum.

Question 3: Name the four embryonic membranes and explain their structure and function.