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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: आठौं हप्तासम्ममा, ७५ प्रतिशत भ्रुणले दायाँ हात बढी चलाएको देखिन्छ । बाँकी प्रतिशत समान रुपमा विभाजित हुन्छ बायाँ हातको प्रभुत्व रहने र कुनै हातको प्रभुत्व नरुचाउनेबीच । यो दायाँ वा बाँया हातको प्रभुत्व देखिने व्यवहारको पहिलो प्रमाण हो ।

All ages referenced to fertilization, not last menstrual period.
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