Nuclear DNA, Chromatin, and Nucleoli

The nucleus is a membrane-bound organelle that stores chromosomal DNA and helps control what proteins a eukaryotic cell makes. It acts as the cell’s control center. DNA in mitochondria and chloroplasts is different because it mainly supports functions specific to those organelles.

Inside the nucl...

In eukaryotic cells, the nucleus is a membrane-bound organelle that houses the cell's genetic information – the DNA.

However, the organization of the DNA within the nucleus depends on the cell cycle phase.

For instance, when the cell is not dividing, the DNA protein complexes, known as chromatin fibers, are suspended loosely in the...