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Fraternal twinA twin who have shared a common uterine environment with its sibling. Fraternal twins are due to the fertilization of two different ova by different sperm. Fraternal twins are also called dizygotic twins.
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Fraternal twinTwo offspring from the same Pregnancy. They are from two OVA, fertilized at about the same Time by two Spermatozoa. Such Twins are genetically distinct and can be of different sexes.
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Fraternal twinSiblings born at the same time as the result of fertilization of two ova by two sperm. They share the same genetic relationship to each other as any other siblings.
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