Rare Set of 'Semi-Identical' Twins Identified in Australia
Print this page THURSDAY, Feb. 28, 2019 — They are among the rarest types of human beings — so-called “semi-identical” twins. Now, doctors in Australia say they’ve identified the world’s second known set of these twins, born from an egg fertilized by two sperm. Semi-identical twins (sesquizygotic) are classed as a third type of twin,… Read More »