Mother's self earned property

Hi all,

I am the only son and have 2 elder sisters. We all are married.

My mother has acquired a property from her savings/earnings and the property is registered on her name. My Mother expired 1 year back. Father is alive.

Kindly clarify on the following :

    1. who is the legal heir of the property mentioned above ?

    2. my sisters (both) are ready to transfer \ settle the property on my name for various reasons. What is the procedure to settle the same on my name?  

Kindly note that my Father also says verbally that he also agrees to transfer \ settle the property on my name?

Will my brother-in-law come into picture for any reason.

Please suggest me the next course of action.

Thanks in advance.

Damu