Dizygotic Twins and Superfecundation Quiz
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Questions and Answers

What characterizes superfecundation?

  • Occurs only through assisted reproductive technology.
  • Occurs when two ova are fertilized in different cycles.
  • Both ova are released in the same cycle but fertilized at different times. (correct)
  • Both ova are fertilized at the same time.

    • Which factor is NOT a risk associated with dizygotic twins?

  • Maternal family history of twins
  • Placentation type (correct)
  • Geographical distribution
  • Maternal age

    • In terms of zygosity and chorionicity, which statement about dizygotic twins is correct?

  • Each twin has separate amnion and chorion configurations. (correct)
  • They are typically dichorionic and monamnionic.
  • They result from a single fertilization event.
  • They always share the same fetal membranes.

    • At what point after fertilization is the chorion formed?

    <p>8 days (B)</p> Signup and view all the answers

    Which of the following correctly distinguishes superfetation from other reproductive processes?

    <p>It consists of fertilization occurring after the pregnancy has started. (D)</p> Signup and view all the answers

    Flashcards

    Superfecundation

    Two eggs are released in the same menstrual cycle and fertilized by different sperm at different times.

    Superfetation

    A new egg is released and fertilized in a different cycle after a previous pregnancy has already begun.

    Chorionicity

    Refers to the type of placenta that develops in a multiple pregnancy. It can be dichorionic (two placentas) or monochorionic (one placenta).

    Amnionicity

    Refers to the type of amniotic sacs that develop in a multiple pregnancy. It can be diamniotic (two amniotic sacs) or monoamniotic (one amniotic sac).

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    Dizygotic Twins

    Twins that develop from two separate eggs fertilized by two different sperm.

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