One of the first hormones produced by a developing embryo is hCG, human chorionic gonadotropin. The function of hCG is to prolong the life of the corpus luteum, ensuring that the endometrium is maintained until full development of the placenta by 3 months of gestation.
hCG is most like which of the following hormones?
1) Progesterone
2) FSH
3) Estrogen
4) LH
