Distribution and function of DNA

Prokaryotic cell chromosome is a long DNA molecule. Eukaryotic cell nucleus in more than one chromosome in each chromosome with only a DNA molecule. But they are generally better than the original nuclear DNA of cells and large molecules and proteins together. The DNA molecule is a function of storing all of the species decided to RNA and protein structure of all the genetic information; planning are the order of biological cells and tissues and synthetic components of time and space; determine the biological life cycle from beginning to end and determine the biological activity of personality. In addition to the chromosomal DNA, a small number of very different structure of the DNA present in the eukaryotic cell's mitochondria and chloroplasts. DNA is the genetic material of the virus DNA.