Jul 31, 2021
IT'S DA QUEEN'S BORTHDAY
HAP BORTH!
seen from Luxembourg
seen from United Kingdom
seen from Canada
seen from China
seen from United Kingdom
seen from Germany
seen from China
seen from Malaysia
seen from T1
seen from Malaysia
seen from China
seen from China
seen from Netherlands
seen from Türkiye
seen from Malaysia
seen from Malaysia
seen from Germany
seen from China
seen from Brazil
seen from Germany
IT'S DA QUEEN'S BORTHDAY
HAP BORTH!
The vast majority of cases in which twin births among humans occur involve either the simultaneous fertilization of two oocytes (or human egg cells), or when the cells from a single fertilized egg split to form two fetuses. These events determine how identical the resulting twin babies could be. In the latter case, they will be 100% genetically similar, and in the former, this similarity will fall to about 50%.However, doctors have recently identified a third mechanism that produces a twin birth.