Will validity-title owner has not earned the property.

The property will be inherited by sucsession to all legal heirs.    If the will made by your mother , depriving you , you may challenge the same for your entitle share in the property.  For another question i.e dowry matter, you should have all proofs and necessary evidence to file criminal case.

After having been transfered the property in your mother's name ,she became absolute owner of property and she has every right to transfer ,alienate ,bequeath,sale  as per her wish.

yes i agree with Senior that when your father registered in your mother name she is the sole and abosolute owner of that property and she can give the property to any one as she is alive and in second you also will become liable because acceptance and giving is liable in dowry case 

Thanks and with all due respect, will there not be any rights as legitmate child of parents and being the home head-after fathers death, did my both sis marriages and overall as a legal heir and right to equality don't I have a right on my share of property?

The very reason my mother is doing this is Saas-Baahu ego in her and I am playing a catalyst role to clam down those egos which she is not liking to see. So this is her revenge against me.

I hope justice should be an outcome of all the underlying facts and nature of the case and just not be based on few acts.

now you can fight for you right on the sahre of the property but going through will take a lot of mental agony so discuss with your mother and let her decide because you had taken the pain after your father and made marriages to your sister with giving gifts to your in laws 

so even your sisters will be at your side in this matter