Here's why:

* Location: Nuclear DNA is found within the nucleus of eukaryotic cells. The nucleus is a membrane-bound organelle that acts as the control center of the cell.

* Structure: Nuclear DNA is organized into chromosomes, which are long, linear strands of DNA tightly packed with proteins.

* Function: Nuclear DNA contains the genetic information (genes) that codes for all the proteins and functional RNA molecules necessary for the cell to function.

While there are other types of DNA like mitochondrial DNA (found in mitochondria), nuclear DNA is the primary form of DNA found in the nucleus of eukaryotic cells.