___Question 1: List the major stages of human development, starting with fertilization.
___Question 2: What happens during fertilization, and why do some embryologists think that this is the stage at which individual human life begins?
___Question 3: What happens during cleavage, and where do embryonic stem cells come from?
___Question 4: What happens during gastrulation, and why do some embryologists say that this event is the beginning of an individual human life?
___Question 5: What is the “14-day rule,” and why is it being questioned?
___Question 6: Why do some biologists think that the formation of the electroencephalogram marks the beginning of personhood?
___Question 7: What happens during birth that is so critical to development?
