In humans, if an egg is not fertilized, which of the following occurs?
Explanation
Answer: A, Menstruation. If the egg is not fertilized, it is flushed out of the body in a process called menstruation.
Key Takeaway: When the egg is not fertilized, it is flushed away along with the uterine wall during menstruation. Choices B-E are all related. During ovulation, a new egg is released. It is supported by a buildup of the uterine wall, which is stimulated by spikes in estrogen and projesterone.