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 pekd3n )o4tvq+rogesterone jkml (:e;uwmao ,(ts4 during 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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