Blood Drug Testing

how can you find out what your dads blood type is without a test?

I am curious to know what my dads blood type is. I know I am his because I look a lot like him. A blood test is out of the question. But I am want to know if there is way to find a internet generator where i type in my blood type and my moms type and where it would give possible types for him. Anyone who sends a direct link to a generator thing like that would get full points.

Public Comments

1. It's not about who you look like. You'll never know unless you're tested. Though, if you know his parent's ones, (say his mom is A, and his dad is B.) Then he'll have the possibility of either one.
2. IMPOSSIBLE.
3. http://www.canadiancrc.com/Paternity_determination_blood_type.aspx You want the second table. You'll see right away that there are still loads of possibilities. Why do you care anyway?
4. Ask him.