How to Help Achieve Abs?

I am a 15 year old boy who is 5'10" and about 150lbs. Lately I have been doing cardio exercises (not strictly just for cardio) such as basketball and running. I also have been doing ab exercises. I do these obviousley because I want abs not just for the ladies but also for myself. My dad seems to think that I may be genetically incapable of getting abs as he has never had them nor my grandfather. But my brother did (he has a different dad). I also eat like a typical teenager but drink a lot of gatorade and mostly water with a soda like 2 or 3 times a week. I don't know if this will be bad for my abs or not. Also, I have very minimal body fat most of which is on my stomach, just enough to cover the abs that I can feel beneath. I am looking for ways to increase abs and lose the fat and also find out if my typical diet (pizza, subway, also some vegetables) may be affecting this, or if you can really be genetically incapable of achieving abs. I thank you for any assistance and would only appreciate serious answers. Thankyou