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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: Pri 8 tednih je pri skoraj 75% zarodkov opazna uporaba desne roke. Preostali del je enakomerno porazdeljen med levičarje in tiste, ki uporabljajo tako levo kot desno roko. To so najzgodnejši dokazi o desničarstvu oz. levičarstvu.

All ages referenced to fertilization, not last menstrual period.
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