The main difference between identical and fraternal twins is that identical twins have the same genes whereas fraternal twins have 50% of the same genes. The splitting of a fertilized egg develops two or more fetuses, forming identical twins. Fraternal twins (also called dizygotic twins) result from the fertilization of two separate eggs with two different sperm during the same pregnancy. Fraternal twins may not have the same sex or appearance. They share half their genomes, just like any other siblings. Difference Between Identical and Fraternal Twins: Key Traits, Genetics, and Myths Explained EllieB Imagine looking at two people and feeling like you’re seeing double, yet noticing subtle differences that set them apart. Twins have always sparked curiosity, their bond fascinating and their origins mysterious. But did you know not all twins share the same story? Identical and fraternal twins may seem similar at first glance, but their differences go far beyond appearances. Whether you’re ... Fraternal twins are two babies who develop from two different eggs and sperm. Learn about their common traits, how they differ from identical twins, and what to expect during your twin pregnancy.
