Conjoined twins a single fertilized egg does not fully split during the process of forming identical twins. The second theory is that a fusion of two fertilized eggs occurs earlier in development. Although conjoined twinning has not been linked to any environmental or genetic cause, they occur so rarely it has not been possible to draw firm conclusions. Surgery to separate conjoined twins may range from very easy to very difficult depending on the point of attachment and the internal parts that are shared. Most cases of separation are extremely risky and life-threatening. In many cases, the surgery results in the death
Otherwise Known as Sheila the Great Tubman- Sheila's thirteen year old sister, who's a ballerina and is boy crazy Merle "Mouse" Ellis- Sheila's friend in Tarrytown, who is the junior champion of yo-yoing. She's a champion swimmer, and a dog lover Betsy Ellis- Mouse's four year old sister, who's also a champion swimmer. Since she's allergic to dogs, she has a make-believe dog called Ootch Sondra and Jane Van Arden- The Van Arden twins, who are good friends with Sheila and Mouse. They both are very excellent swimmers and both get easily offended. They all argue at a sleepover. Marty- Sheila's swimming teacher, who struggles to