* Meiosis is a type of cell division that produces gametes (sex cells like sperm and egg). It's crucial for sexual reproduction.

* Animal cells definitely undergo meiosis. This is how they produce sperm and eggs.

* Protists are a diverse group of mostly single-celled organisms. Some protists reproduce sexually, meaning they do undergo meiosis. However, many protists reproduce asexually and don't need meiosis.

So, the answer is NOT that both animal and protist cells undergo meiosis. It's more accurate to say that:

* Animal cells always undergo meiosis.

* Some protists undergo meiosis, while others do not.