Final answer:
Dizygotic twins share about 50% of their genes in common, just like any other siblings.
Step-by-step explanation:
Dizygotic twins, also known as fraternal twins, develop from two separate eggs that are fertilized by two separate sperm. As a result, they share about 50% of their genes in common, just like any other siblings. Unlike monozygotic or identical twins, dizygotic twins are not more identical than siblings born at different times.