conjoined twins, and even semi-identical twins? This is what we are going to dive in a little today. Identical Twins: Identical twins or monozygotic twins come from a single fertilized eggs that ...

Fraternal twins: Identical twins: There's another, extremely rare type of twins called semi-identical (sesquiszygous) twins, who share more than half but less than all their DNA. Semi-identical ...

Doctors have confirmed that two four-year-old children in Brisbane, Australia, are “semi-identical” twins, making them just the second case of this type of twin ever reported. The boy and girl, ...