Describe the midblastula transition

Question

Problem:

Question 1: Describe the changes that occur in a Xenopus embryo at the midblastula transition (MBT).

Question 2: After undergoing extensive gastrointestinal surgery, a 50-year-old man has remained in the hospital and has been receiving a 5% dextrose plus 0.9% saline solution for 3 weeks. Clinical and laboratory findings include pitting edema, hepatomegaly, a poorly healing surgical wound, lymphopenia, normocytic anemia, and hypoproteinemia. Which of the following is the most likely disorder?

1. Essential fatty acid deficiency
2. Kwashiorkor
3. Marasmus
4. Vitamin B12 deficiency
5. Vitamin C deficiency

 

Please Explain don't just write the answer.