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Baby's heart begins to beat as early as 16 days after conception, study finds
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Pregnancy & Early Development How does life begin? Fertilization or conception Joining of the sperm and egg Takes place in the FALLOPIAN TUBE Zygote: - ppt download
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When Can You Hear Baby's Heartbeat?
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Fetal development Information | Mount Sinai - New York
Fetal development: The 1st trimester - Mayo Clinic
Heart development - Wikipedia
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Live Action - Did you know? At 21 days, a preborn baby has a heartbeat. At the end of the first trimester, the child has a face, fingers and toes, and a
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