How many cells does a 6-week-old human fetus have? And how many cells does a fully developed human adult have? Comparatively, how many cells does a 6-week-old chimpanzee fetus have? And how many cells does a fully developed chimpanzee have? I am interested because I want to see if the abortion debate could be drawn along the lines of personhood relative to number of cells. Do you think this is a plausible way to think about the debate? Also, where could I find more information about this topic? Thank you, Alexander