Section 2-113
An individual who is related to the decedent through 2 lines of relationship is entitled to only a single share based on the relationship that would entitle the individual to the larger share.
Comment
This section prevents double inheritance. It has potential application in a case in which a deceased person's brother or sister marries the spouse of the decedent and adopts a child of the former marriage; if the adopting parent died thereafter leaving the child as a natural and adopted grandchild of its grandparents, this section prevents the child from taking as an heir from the grandparents in both capacities.