Question

Does nucleus have their own DNA???​

Answer 1

Answer:

It’s one of the big mysteries of cell biology. Why do mitochondria—the oval-shaped structures that power our cells—have their own DNA, and why have they kept it when the cell itself has plenty of its own genetic material? A new study may have found an answer.

Explanation:

Cell organelles like the nucleus, chloroplast and mitochondria have their own DNA. These organelles have the double membrane. Nuclear DNA is linear and double-stranded while DNA of mitochondria and chloroplast is circular and double-stranded. Due to the presence of DNA, these organelles are also called as semiautonomous cell organelles. Ribosomes are made up of proteins and RNA. Lysosomes possess digestive enzyme which helps in intracellular digestion. However, lysosome and ribosome lack DNA.

Answer 2

The nucleus is a membrane-enclosed organelle found in most eukaryotic cells. The nucleus is the largest organelle in the cell and contains most of the cell's genetic information (mitochondria also contain DNA, called mitochondrial DNA, but it makes up just a small percentage of the cell's overall DNA content).