Q:

Which of the following best describes the placental components of dizygotic twins?

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Which of the following best describes the placental components of dizygotic twins?


  1. One placenta, two amniotic sacs, one chorion
  2. One placenta, two amniotic sacs, two chorions
  3. Two placentas, two amniotic sacs, one chorion
  4. Two placentas, two amniotic sacs, two chorions
  5. One placenta, two amniotic sacs, two chorions

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D. Dizygotic twins and 35% of monozygotic twins have two placentas, two amniotic sacs, and two chorions (“222”).

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