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How are identical twins different than fraternal twins (explain by discussing sperm and egg)?
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How are identical twins different than fraternal twins (explain by discussing sperm and egg)?

User Ammerzon
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To form identical, one fertilised egg splits and then develops into two babies with exactly the same genetic information. However to form fraternal twins, two eggs are fertilised by two sperm and produce two genetically unique children.
User Asad Malik
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