Final answer:
Dizygotic twins have the same level of genetic similarity as any other siblings, typically sharing about 50% of their genetic material. They can be as different or as similar as siblings born at different times due to receiving different gene combinations from their parents.
Step-by-step explanation:
Dizygotic twins, also known as fraternal twins, can indeed have genetic traits that are as different or as similar as any siblings who are not twins. Unlike identical twins who develop from a single fertilized egg and share 100% of their genetic material, dizygotic twins result from two separate eggs fertilized by different sperm, each inheriting a different set of genes from their parents. Therefore, the genetic similarity between dizygotic twins is equivalent to that of regular siblings, typically sharing about 50% of their genetic materials. The range of difference and similarity in traits for dizygotic twins is broad, just like in any siblings born at different times.
Research, such as the Minnesota Study of Twins Reared Apart, has provided insights into how genetics and environment play roles in developing personalities and traits. These studies demonstrate that while genetics have a significant influence, they are not the sole determinant of personal characteristics; environmental factors and epigenetics also contribute to the development of individual differences.