What is undentical twins?

Undentical twins, more commonly referred to as fraternal twins, occur when two separate eggs are fertilized by two different sperm cells during the same menstrual cycle. Unlike identical twins, who develop from a single fertilized egg that splits into two, fraternal twins share about 50% of their genetic material, similar to regular siblings. This results in them potentially having different physical traits and characteristics. Fraternal twins can be of the same sex or different sexes.