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Can fraternal twins look identical?

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Fraternal twins are the result of two eggs being fertilized by two sperm. The zygotes implant separately, meaning each baby ends up developing their own sac and placenta. Fraternal twins can be boy/boy, boy/girl, or girl/girl. Identical twins are the result of one fertilized egg splitting. read more

Fraternal twins and siblings can look very similar to each other and since all twins are the same age, then can look very, very similar. But dizygotic twins can never be quite as identical as monozygotic twins because they come from two separate eggs just like regular siblings and don’t share the same DNA like identical twins. read more

Sometimes, factors during the pregnancy, especially twin to twin transfusion syndrome, can lead to identical twins that have very different birth weights and are mistakenly thought to be fraternal. And sometimes, fraternal twins can look enough alike to be confused with identical twins. read more

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