My father's family whom I've never seen are suppose to be white but I have black hair black eyes medium tan skin. People have always asked was I mixed mexican/puerto rican. Are there any features that I can look for to help me know what race I am?

What are obvious traits my baby will have that she 100% received from her father?

Sorry there are no traits that prove you are bi racial and esp from your current parents, since for example many traits show up after the 2nd or 3nd generation and there could have been biracial genes from further back in family tree.

Of course you ask your mom if you dad was white and she will say yes or no, you look at the birth certificate and if the father is listed as white, you are bi racial.

My niece for example is not bi racial at least from her mom and dad but she is lighter skin color than my son who is bi racial ( I am white, his mom is black)