Hello Student

A person can have one domicile. The domicile of a person is a legitimate birth  in the country where the candidate's father domiciled at the time of his birth in that country or the candidate is a posthumous child.  So if you have birth where your  grand parents now lived  then your domicile will be In the state of UP.

So if you maintain all the conditions mentioned above then you may appear for as per domicile candidate and can enjoy 85% State quota for Neet examination. For state of UP.