What type of ions will active transport remove

Sodium Ion

Active transport is known to be the movement of molecules across a cell membrane in the direction against their concentration gradients. Furthermore, active transport is the process of moving sodium and potassium ions across the cell membrane. However, sodium ion is usually removed during the process of active transport while potassium is taking inside.

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?