your father is absolute owner of said land
2) your father can execute will bequeathing property to your brother
3) your father can execute gift deed and transfer property to his son if he so desires
4) your consent is not required
5) registrar will register the gift deed
6) you would then have no share in said properties . please note that it is not ancestral property . your grand father had partitioned land equally among his sons . it would be self acquired proeprty of father and he can dispose it as he pleases