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The Endowment for Human Development
The Endowment for Human Development
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Gender Differences


3 months, 2 weeks

From The Biology of Prenatal Development.Buy Now

Script: הבדלים התפתחותיים הקשורים למין מופיעים לראשונה. למשל, עוברים ממין נקבה מפגינים תנועות של הלסת לעיתים תכופות יותר מזכרים.

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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