The thickness of the uterine lining , becomes very thick...because when the level of hormone progesterone reaches its highest levels. according to Dr.X on yahoo answers.
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Answer:
The answer is letter A.
Explanation:
A loss-of-function mutant in the gene encoding Mad2.
Answer:
11) A. The optimum pH of an enzyme is 6.6
12) C. A control group
I would say A because it sounds right hope this helps