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Gender Differences

 

3 months, 2 weeks
From The Biology of Prenatal Development.Buy Now

Script: Sex-dependent developmental differences appear for the first time. For instance, female fetuses exhibit jaw movement more frequently than males.

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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Gender Differences
Gender Differences
( 3 months, 2 weeks)
Tooth Development Begins
Tooth Development Begins
( 3 months, 2 weeks)
Blood Cells and Bone Marrow
Blood Cells and Bone Marrow
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Quickening
Quickening
( 4 months)
Movement
Movement
( 4 months)
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Hormonal Stress Response
( 4 months, 1 week)
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