Prenatal Development Timeline

By jm020090

  • Start of the period of the zygote

  • Start of the first trimester

  • End of the period of the zygote

  • Start of the period of the embryo

  • End of the period of the embryo

  • Start of the period of the Fetus

  • Start of the second trimester

  • Week of sex detection

  • Week of Viable birth

  • Start of the third trimester

  • End of the period of the fetus

  • Full term pregnancy

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