本题目来源于试卷: Continuity and Change D.7 Reproduction，类别为 IB生物学
[单选题]
Which is not a role of progester)/luy2f ejx5 n8 wzn6xone nfq1nw/0*a *epmj u+vduring pregnancy?
I. Stimulates the corpus luteum to produce hCG and oestradiol
II. Inhibits the secretion of oxytocin
III. Prepares the uterus lining for implantation
A. II only
B. I only
C. II and III
D. I, II and III
参考答案: B
本题详细解析:
Statement I is not a role of progesterone. Progesterone is produced by the corpus luteum; hCG is produced by the blastocyst after implantation and this hCG maintains the corpus luteum at the beginning of pregnancy. Choice B is correct. Statements II and III are roles of progesterone. Choices A, C and D are therefore incorrect.
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