Is it true the conjoined twins came from identical twins?

Really the twins Birth identical twins, often associated with conjoined twins. Although they have something in common, conjoined twins are different from identical twins.

Two identical twins have their own members. But it's different for conjoined twins who share limbs.
Identical twins have the same genetic origin

The identical twins are also called monozygotes. Identical twins are formed from a single fertilized egg. After fertilization, the zygote divides into two to produce two embryos.

Both embryos have the same genetic and DNA background. However, both can have different placenta in the uterus. The cause of the occurrence of identical twins is unknown.

In addition, there is no hereditary factor that makes you have identical twins. One third of birth twins are identical twins, identical twins can be female or male.

Siamese twins share body parts

Siamese twins are two babies who are physically connected to each other. Conjoined twins occur when zygotes from identical twins fail to separate completely.

Conjoined twins develop when the embryo is only partially separated to form two individuals. Although the embryo develops two fetuses, both remain physically connected, usually in the chest, pelvis or abdomen.

Conjoined twins can share the placenta, even one or more internal organs. The majority of conjoined twins, around 70% to 75%, are women.

Unfortunately, the survival rate of the conjoined twins is equal to 5-25%. Many conjoined twins die or die shortly after birth.

Conjoined twins who survived can be separated by surgery. However, the success of the operation depends on the location of the conjoined twins and the number of shared organs.

Is it true the conjoined twins came from identical twins?

When a fertilized egg develops into two individuals, identical twins or monozygotic twins occur. Eight to 12 days after fertilization, the embryonic layer will divide and form identical twins.

Then, several organs and structures begin to develop. However, when the embryo divides for longer, usually 13-15 days after fertilization, the separation stops before the end of the process.

Therefore, the identical twins that are produced are not completely separate, but become merged, or are called conjoined twins. In short, identical twins are zygotes which are divided into two embryos.

Meanwhile, conjoined twins are identical twins who fail to split into two embryos as long as they are not physically combined.

Differences and similarities between identical twins and conjoined twins

So, what distinguishes identical twins from conjoined twins? Despite differences, several factors play a role.

• Identical twins may have one or two placentas, while conjoined twins share the placenta.
• The identical twins do not share organs, while conjoined conjoined can share organs.
• Identical twins can be male or female, while conjoined conjoined more feminine.
• Identical twins are more common in IVF programs, while conjoined twins are a natural thing.
• Identical twins and conjoined twins are both unknown causes and risk factors.
• Identical twins and conjoined twins have conjoined faces from identical twins?

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