The cells that will eventually undergo meiosis to produce gametes are called germ cells or gametocytes.

Here's a breakdown:

* Germ cells are the specialized cells that are set aside early in development to eventually produce gametes. They are found in the gonads (testes in males and ovaries in females).

* Gametocytes are the germ cells that are specifically destined to undergo meiosis.

So, while germ cells encompass the entire lineage leading to gametes, gametocytes specifically refer to the cells that are directly entering meiosis.