Indiana Code Title 29. Probate § 29-1-2-7

Sec. 7. (a) For the purpose of inheritance (on the maternal side) to, through, and from a child born out of wedlock, the child shall be treated as if the child's mother were married to the child's father at the time of the child's birth, so that the child and the child's issue shall inherit from the child's mother and from the child's maternal kindred, both descendants and collaterals, in all degrees, and they may inherit from the child.  The child shall also be treated as if the child's mother were married to the child's father at the time of the child's birth, for the purpose of determining homestead rights and the making of family allowances.

(b) For the purpose of inheritance (on the paternal side) to, through, and from a child born out of wedlock, the child shall be treated as if the child's father were married to the child's mother at the time of the child's birth, if one (1) of the following requirements is met:

(c) The testimony of the mother may be received in evidence to establish such paternity and acknowledgment, but no judgment shall be made upon the evidence of the mother alone.  The evidence of the mother must be supported by corroborative evidence or circumstances.

(d) If paternity is established as described in this section, the child shall be treated as if the child's father were married to the child's mother at the time of the child's birth, so that the child and the child's issue shall inherit from the child's father and from the child's paternal kindred, both descendants and collateral, in all degrees, and they may inherit from the child.  The child shall also be treated as if the child's father were married to the child's mother at the time of the child's birth, for the purpose of determining homestead rights and the making of family allowances.