Aweight-training program that gradually increases the resistance lifted relies on the principle to build strength

A weight-training program that gradually increases the resistance lifted relies on the progression principle to build strength, where strength is the amount of force a muscle can exert.
The principle of progression states that you should overload gradually and that there is a perfect level of overload in-between a too slow increase and a too rapid increase.

The punnett square is the device used to predict genetics.