1) in respect of self acquired property you have no rights during your parents lifetime .
2) your parents can make a will bequeathing self acquired property to your brother only .
3) further during their life time they can also sell , gift the said property .
4) if your parents die intestate you would have equal share as your brother in self acquired property
5) as far as ancestral property is concerned you have right for your share in said property
6) you can issue legal notice claiming your share in property . .