DNA is located in the nucleus of eukaryotic cells, which includes plants, animals, fungi, and protists.

Here's a breakdown:

* Eukaryotic cells: These cells have a membrane-bound nucleus where the DNA is organized into chromosomes.

* Prokaryotic cells: These cells (like bacteria and archaea) lack a nucleus. Their DNA is located in a region called the nucleoid, which is not enclosed by a membrane.

There are also a small amount of DNA located in the mitochondria (in both plant and animal cells) and chloroplasts (in plant cells). This DNA is called extra-nuclear DNA and is involved in specific functions within these organelles.