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Question

Fraternal twins are

A
Dizygotic
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B
Monozygotic
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C
Trizygotic
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D
None of the above
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Solution

The correct option is A Dizygotic
Dizygotic (fraternal) twins are produced in the rare case when two ova are released simultaneously. They are fertilized by two different sperms. Each fertilized ovum develops into an embryo. It could be of the same sex or the different sex and they are genetically dissimilar.
So, the correct answer is option A.

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