Pushpalatha M1, Sharmadha K. L2, Meenakshi Parthasarthy3
ABSTRACT: A twin is one of the two offsprings produced in the same pregnancy.[1] Twins can either be monozygotic (identical) meaning that they develop from one zygote that splits and forms two embryos, or develop from two eggs, each fertilized by separate sperm cells.[2] Women who have family history of fraternal twins have a higher chance of producing fraternal twins themselves, as there is a genetically linked tendency to hyper-ovulate. There is no known genetic link for identical twinning.[3] Conjoined twinning is a rare phenomenon, occurrence being 1 in 50000 to 100000. However since 60% are stillborn or die shortly after, the true incidence is around 1 in 200000 live births.[4]
