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Oct 23, 2024, 1:13 pm61 pts
ScienceDaily
According to a new study, chimpanzees, like humans, must contend with a confined bony birth canal when giving birth. In humans, the problem was exacerbated by our unique form of upright walking since this led to a twisting of the bony birth canal, while the fetal head got larger. The 'obstetrical dilemma'…
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