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Siamese Twin Facts

Siamese Twin Facts - Reviewed by Kidzworld on Dec 27, 2006
( Rating: 1 Star Rating)

Everything you want to know about siamese twins: the science behind conjoined twins, how they separate conjoined twins like the Bijani sisters from Iran and a celeb who was born as a siamese twin.

Whether you see them on the street or on CNN, Siamese twins are hard to ignore. Conjoined, or Siamese, twins are attached to their identical twin at the head, chest or back. It's hard to believe that this amazing phenomenon is the result of some pretty simple science.

How Siamese Twins Develop

Siamese twins develop the same way that identical twins do - with one major difference. While identical twins (twins who look exactly the same) are formed inside a woman's uterus (womb) when a fertilized egg splits in two, Siamese twins form when the egg starts to split but stops part way through. Each side of the partially divided egg turns into a fetus (unborn baby). Siamese twins occur in animals - such as cats and snakes - not just people.

How Common Are Siamese Twins?

Siamese Twins are extremely rare. They occur about once per 100,000 pregnancies. Often times, only one half of the attached eggs will develop into a baby, while the other side doesn't, so babies are sometimes born with the undeveloped twin attached to them.

Separating Siamese Twins

No matter how they look on the outside, Siamese twins are two different people with different ideas and interests. Normally doctors will try to separate the twins if they can. The success rate of these surgeries vary depending on where the twins are attached and what organs they share, but it's usually pretty risky. In 2003, 29 year-old Siamese twins from Iran had surgery to be separated but both died. However, about 75 percent of separations are successful.

Siamese Twins - Did U Know?

  • Siamese twins get their name from the famous conjoined twins Chang and Eng who traveled with the Barnum and Bailey circus in the 1800s. They were from Siam, now known as Thailand.
  • The first successful separation of Siamese twins occurred in 1956.
  • Actor Andy Garcia (The Godfather III) was born with his undeveloped twin brother attached to him.
  • Most Siamese twins are female.
  • Most Siamese twins are attached at the chest.

1 I think that it was sad that the twins died. I feel really bad. The thing that really surprised me was that they took the risk and both of them died.

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Nickname: sk8ergirl4avril
Age: 10

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Tennis123
Tennis123 posted in Debating:
anyone who honestly believes the earth is flat, please add me so we can have a private 1 on 1 conversation about this.
reply 27 minutes
Tennis123
Tennis123 posted in Debating:
a college degree means literally nothing. and lets see the moons shadows, timezones, the horizon, the fact that you can see farther when you are higher up, hurricanes (because of the earth spinning), need i go on?
reply 36 minutes
unicornsrule626
"Tennis123" wrote: then that kinda proves your aren't logical. do you honestly think some youtube video with a conspiracy theory nut holds more merit than scientific fact and evidence? What if that ' conspiracy theory nut' holds a college degree? Would that make you believe them? AND WHAT EVIDENCE DO YOU HAVE THAT THE EARTH IS ROUND? You can't see it with your own eyes! Unless CGI pictures count....
reply about 1 hour
Tennis123
Tennis123 posted in Debating:
then that kinda proves your aren't logical. do you honestly think some youtube video with a conspiracy theory nut holds more merit than scientific fact and evidence?
reply about 1 hour
CaptJolee
CaptJolee posted in Debating:
"Tennis123" wrote: "CaptJolee" wrote: "Tennis123" wrote: i would like to point out that theres a difference between having an open mind and believing crazy stuff because of willful or unintentional scientific and factual ignorance. youtube videos made by conspiracy theorists are not a very good source of information. I honestly think that if you believe the earth is flat, there is something fundamentally wrong with your way of thinking and how you decide whats true and whats not. so what your saying is that if we believe in the flat earth we have some kind of mental problem??? what I'm saying is that you're not a logical person and are easily manipulated if you do.   well im quite the opposite since i research both side of the theory by looking at even the debunks
reply about 2 hours