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Human Development

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From The Biology of Prenatal Development.

Script: Bi a ba nsọrọ nipa awọn ohun alaaye, "idagbasoke enia bẹrẹ lati igbati idapọ ba w’aye laarin ẹyin ọkunrin ati obirin," nigbati ọkunrin ati obirin ba da mẹtaleloogun ninu awọn eroja ti o wa ninu ẹya-ara wọn pọ, nipasẹ idapọ ẹya-ara ti o wa fun ọmọ bibi.

All ages referenced to fertilization, not last menstrual period.

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