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Differentiate between monozygotic and Dizygotic twins.

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Differentiate between monozygotic and Dizygotic twins.

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Monozygotic twins:

1. Monozygotic (Identical) twins are produced when a single fertilized egg splits into two during the first cleavage. 

2. They are of the same sex, look alike and share the same genes.

Dizygotic twins:

1. Dizygotic (Fraternal) twins are produced when two separate eggs are fertilized by two separate sperms. 

2. The twins may be of the same sex or different sex and are non-identical.

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