In mammals that have an estrous cycle, the female is sexually receptive only during
a. the preovulatory phase
b. ovulation
c. the postovulatory phase
d. menstruation
Question 2
You are having dinner with a close female friend, and you know that her boyfriend is going to propose to her later that evening. You barely manage to keep yourself from telling her the secret.
As you say goodbye and begin walking home, you pass your favorite ice cream shop. According to the research on willpower, how likely are you to keep to your diet and resist buying a cone?
A) You will be less likely to resist than normal.
B) You will be more likely to resist than normal.
C) You will be neither more nor less likely to resist.
D) There is no way to determine how likely you are to resist.
The sexual cycle of flowering plants involves alternation of sporophyte and gametophyte generations.
The ovarian and uterine cycles in a human female.
Urea cycle
Orexin and the Sleep–Waking Cycle
Life cycle of Obelia, a hydrazoan that has alternating medusa (left) and polyp generations