In eukaryotic cells, the DNA is typically housed in a nucleus (plural = nuclei), the most prominent organelle in a cell . This organelle directs the synthesis of ribosomes and proteins. Let’s look at it in more detail
The nucleus stores chromatin (DNA plus proteins) in a gel-like substance called the nucleoplasm. The nucleolus is a condensed chromatin region where ribosome synthesis occurs. We call the nucleus’ boundary the nuclear envelope. It consists of two phospholipid bilayers: an outer and an inner membrane. The nuclear membrane is continuous with the endoplasmic reticulum. Nuclear pores allow substances to enter and exit the nucleus.