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Subjects>Math>Math & Arithmetic

Why are identical twins and fraternal twins not the exact same?

Anonymous

∙ 11y ago

Updated: 11/4/2022

Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.

Wiki User

∙ 11y ago

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Q: Why are identical twins and fraternal twins not the exact same?

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What are fraternal twins?

Fraternal twins are two siblings that have the same birth day, but do not look identical.

Do Identical twins think more alike than Fraternal?

Yes. Fraternal twins don't look alike at all. Identical, meaning to look the same, are well, identical.

Why do you think identical twins were more alike than fraternal twins?

Fraternal twins share most of their genetic material, by virtue of having the same parents. Identical twins, however, by definition share 100% of their DNA. This means, for example, that identical twins cannot ever be one of each gender, as fraternal twins often are.

Are paternal twins identical?

I dont think there is such a thing as paternal twins...perhaps you are thinking of fraternal twins. In that case, they are not identical twins, they do not look the same and they can be different sexes.

How does identical and fraternal twins happen?

If one egg is fertilized and as it begins to grow it divides into two separate zygotes (fetuses) then they can develop into identical twins. If two separate eggs are both fertilited at the same time they will develop into fraternal twins

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