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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: Pânã la 8 sãptãmâni, 75% dintre embrioni sunt dreptaci. Restul sunt împãrţiţi în mod egal între stângaci şi cei care nu au preferinţe. Aceasta este cea mai timpurie dovadã a comportamentului de stângaci sau dreptaci.

All ages referenced to fertilization, not last menstrual period.
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