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The Endowment for Human Development
The Endowment for Human Development
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Right- and Left-Handedness


8 weeks

From The Biology of Prenatal Development.Buy Now

Script: Inden 8 uger udviser 75% af embryoerne højrehåndsdominans. Resten fordeler sig ligeligt på venstrehåndsdominans og højre/venstre-indifferens. Dette er det tidligste bevis på højre- eller venstrehåndet adfærd.

All ages referenced to fertilization, not last menstrual period.
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Buy the Biology of Prenatal Development DVD
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