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    2.2: Prenatal Development
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    1. ygarcia37 26 Jun 2026
      Mitosis is a fragile process and fewer than one half of all zygotes survive beyond the first two weeks

      Does this mean that many women get pregnant and miscarry without ever realizing it?

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    socialsci.libretexts.org/Bookshelves/Early_Childhood_Education/Child_Growth_and_Development_(Paris_Ricardo_Rymond_and_Johnson)/02:_Conception_Heredity_and_Prenatal_Development/2.02:_Prenatal_Development