What's my right?

Please tell me if my understanding is correct or not. When a father disowns a son by publishing in news paper then father is making sure that son is not creating problem when father is alive but if father passed away and he didn't write any will or transfer/gift deed then all rights of son are intact and he can claim his share in the father's ancestral as well as acquired property. So it's ok I have atleast fifth share in the property, although property was acquired by me and as a matter of fact I should have been the sole owner of the property.

Please tell me if my understanding is correct or not. When a father disowns a son by publishing in news paper then father is making sure that son is not creating problem when father is alive but if father passed away and he didn't write any will or transfer/gift deed then all rights of son are intact and he can claim his share in the father's ancestral as well as acquired property. So it's ok I have atleast fifth share in the property, although property was acquired by me and as a matter of fact I should have been the sole owner of the property.