<prompt> Out of all the following statements regarding twins pregnancy, which one is false?The frequencies of monozygotic twins is 1 in 250 PregnanciesDivision after formation of the embryonic disk results in conjoined twinsMost common type of Dizygotic twins are through superfetationA dichorionic twin pregnancy can also denote monozygotic twins.  <response>: Option A,B,D are correct Superfecundation it is the feilization of two or more ova from the same cycle by 2 different sperms1 cycle 2 eggs Most common type of Dizygotic twins are through Superfecundation Superfetation : Very rare in humans. This is mostly a phenomenon seen in cattle. Here 2 eggs of 2 separate cycles are feilised with 2 separate acts of intercourse. 