Identical twins born with their bodies joined at some point and having varying degrees of http://www.answers.com/topic/residual duplication, a result of the incomplete division of the...
Chang and Eng Bunker ( as I recall, no relation to Archie) were the first pair to survive to adulthood and they hailed from Siam. (they were male) hence the name. It is a congenital anomality and is...