Out of all the following statements regarding twins pregnancy, which one is false?
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.
The frequencies of monozygotic twins is 1 in 250 Pregnancies
Division after formation of the embryonic disk results in conjoined twins
Most common type of Dizygotic twins are through superfetation
A dichorionic twin pregnancy can also denote monozygotic twins.
Twin Pregnancy, Molar Pregnancy, Gestational Trophoblastic disease and contraception in special situations (Sour Grapes!)