Can a male and female twin be identically?

Male and female twins cannot be identically identical because they originate from different sperm and egg cells. Identical twins, or monozygotic twins, develop from a single fertilized egg that splits into two embryos, resulting in two genetically identical individuals of the same sex. In contrast, male and female twins, known as fraternal or dizygotic twins, arise from two separate eggs fertilized by two different sperm, leading to genetic differences and different sexes.