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The Endowment for Human Development
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Right- and Left-Handedness


8 weeks

From The Biology of Prenatal Development.Buy Now

Script: Bis 8 Wochen zeigen 75% der Embryos eine Dominanz der rechten Hand. Der Rest ist gleichermaßen aufgeteilt zwischen linkshändiger Dominanz und keiner Dominanz. Dies ist das früheste Auftreten von Links- oder Rechtshändigkeit.

All ages referenced to fertilization, not last menstrual period.
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