How twins are born

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How twins are born

Posted by Shiny Varghese 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Amar Kumar 8 years, 1 month ago

There are two types of twins, identical and non-identical.

Identical or monozygotic twins are formed when one egg is fertilized by one sperm which then divides into two separate embryos. Each shares exactly the same genetic components and identical genetic structures. Identical twins also share a placenta.

Non-identical or dizygotic twins form from two separate eggs being fertilised by two separate sperm. These twins are their own unique little individuals and share no more genetic composition than siblings with the same parents. Each baby in a non-identical twin pair will have its own placenta.

Another name for non-identical twins is fraternal, the other name for identical twins is non-fraternal.

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