This math doesn't make any sense to me. I figured this would be a neat discussion to have. O blood type is recessive. Meaning if a Mother has O+ blood and the Father has B+ blood, the child will have B+ blood. However, O+ is the most common blood type, with 37% of the population having O+. How does this happen if O is recessive? For example, Green eyes are also a recessive trait, and they only account for 2% of the world's eyes. How does O blood type not match this same pattern?