Craniopagus twins conjoined twins develop inutero remains unclear. Embryologists have traditionally attributed identical twinning as "splitting or fission" of either the inner cell mass of pleuripotential cells or early embryonic disc at 13–14 days of gestation just before the primitive streak. Some theorists suggested that conjoined twins develop as a result of the failed fusion of a single fertilized ovum. However a new hypothesis suggests that cranial fusion occurs between two separate embryos before the end of the 4th week of gestation. This can happen because the cranial neuropore is still open, which is responsible for the ultimate fusion and formation of
Ikki Twins Ikki Twins Erica "Rikki" Mongeon and Victoria "Vikki" Mongeon (born February 18, 1981) better known by the stage name the Ikki Twins are identical twin models, and television personalities. They are best known as the stars of the MTV reality dating show "A Double Shot at Love". The twins started their career working as waitresses at a Hooters restaurant and were featured in Hooters calendars. They gained recognition when they were asked to model on a motorcycle website. The twins have appeared in several magazines, including "Import Tuner", "Performance Auto and Sound", "Fast and Sexy", and "Playboy". They have also