DNA as the command book of life shapes different forms and conformation during life cycle and one of the main important biotechnology definitions is that the chromosome is related to the compressed form of DNA that in humans looks like a X alphabet.

A chromosome is a long chain of DNA molecules that contains part of all of the genetic material of an organism. DNA is a fundamental molecule that carries the genetic instruction of all living organisms. DNA is packed into chromosomes with the help of special proteins called histones.