Yes, your chances of having twins are higher if your sister has fraternal twins.
According to research, if a woman's sister has fraternal twins, she is approximately 2.5 times more likely to have twins herself. This increased likelihood is often attributed to genetics passed down from the mother's side. The "risk" of having twins is often said to come from the mother, with the likelihood of having twins increasing if the mother or a sister has fraternal twins.
