Science talks about genetic lottery… haves and have nots, lucky and unlucky.
The truth is both simpler and more complicated.
Human DNA has capacities encoded, but they are either turned on or not. And even capacities that are turned of, may be used, or not used.
The kids in studies who are good at reading but not good at math are dealing not with a reading gene and a math gene missing, instead they deal with something less simplistic than that.
There is no reading gene and there is no math gene. On the other hand, there are 160 genes that lie underneath all the clever feats a child or adult can perf