Zar may refer to: 1  Zar, Armenia, a town in the Kotayk Province.  Zar, Azerbaijan, a village in the Kalbajar Rayon currently controlled by the Nagorno-Karabakh Republic.
If you're carrying more than one baby, chances are good you'll deliver early. Twins are usually born around 36 weeks -- four weeks early. Triplets arrive at about 33 weeks, and quads often make their debut at 31 weeks.
Twinning after 12 days post-fertilization will typically result in conjoined twins. 1  Dichorionic/Diamniotic : each twin has his/her own placenta, chorion and amniotic sac. 2  Monochorionic/Diamniotic: twins share placenta and chorionic sac but have their own amniotic sac. 3  Monoamniotic/Monochorionic : twins share placenta, chorionic and amniotic sac.