1) if these are self acquired properties of your grand mother and your father inherited them on grand mother demise it would not be ancestral properties
2) please clarify on what basis you say property is ancestral
3) you can have share in properties bought by your father in name of sons
4) if it is bought out of joint family income you can claim share in said properties
5) if your mother is housewife you will also have share in property bought on her name
6) you will have to move court to set aside gift deed made in favour of sons
7) you have no share in self acquired property of your father
8) you can claim share in the house only if it is ancestral property