Human Reproduction – Functions of menstruation & Assistance in Human Childbirth?
1) One of the hypothesized reasons for the evolution of menstruation is that the decidualization of the endometrium is one way the mothers body may monitor and discard defective embryos or reduce the number of embryos brought to term (e.g., reduction in “twinning”).
a) What are your thoughts about these possible functions for menstruation in human females?
b) Do you find the amount of “quality control” in human reproduction unusual? Why or why not?
2) After reading PPT Lect 6.2, and reading “The Evolution of Human Birth”, please reflect on the authors’ assertions that maternal emotions in childbirth, such as fear and anxiety, may have helped “select” for seeking necessary assistance during human childbirth.
a) Do you find this possibility credible in humans; why or why not?
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