Out of all the following statements regarding twins pregnancy, which one is false?: (A) The frequencies of monozygotic twins is 1 in 250 Pregnancies, (B) Division after formation of the embryonic disk results in conjoined twins, (C) Most common type of Dizygotic twins are through superfetation, (D) A dichorionic twin pregnancy can also denote monozygotic twins.
Answer is C. Option A,B,D are correct Superfecundation it is the feilization of two or more ova from the same cycle by 2 different sperms(1 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.