Problem:

Please read both the questions carefully and answer them.

Question 1: Name and explain the three stages of gastrulation. What is the overall result of gastrulation?(what structures and layers form)

Question 2: Which Hfr cell would pose more of a clinical threat: an Hfr cell carrying an antibiotic resistance gene adjacent to the oriT or Hfr cell carrying an antibiotic resistance gene furthest away from the oriT? Explain.