Twin
Twins are children born from the same mother, during the same pregnancy. There are two kinds of twins:
- identical twins or monozygotic twins: A single ovum fertilized by one sperm. Both babies share the same DNA and are very resembling.
- fraternal twins, "non identical twins" or dizygotic twins: When two ovum are fertilized by two sperm. Fraternal twins share the same characteristics that if they were born from two different pregnancies.
Identical twins.
Fraternal twins.
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