That IS genetic, according to The Bell Curve.
But there are different kinds of intelligence. Poindexter may excel at math while he is hopeless at anything involving good hand/eye coordination, while Jamar has a hard time in Algebra but can consistently nail the 3 point shot in basketball. Both involve brain sophistication, but different kinds. Neither person is "smarter" than the other one.
To put it another way:
The problem for Jamar is that the economic value of the ability to make a 3 point shot is zero unless he is so good that he makes the NBA(in which case it is worth a lot).
Meanwhile Poindexter's math ability has a positive economic value along a wide spectrum of ability.
Yet the federal government's discrimination rules prohibit recognizing that Jamar and Poindexter have different economic values.
Libtard BS. Many animals have far superior physical skills than any human athlete and they are not equally intelligent as humans by any sane definition of the word. Unlike animals, human evolution is largely driven by warfare. Never go to war unless you have more Poindexters on your side than your opponent.