The Biveri-Sutton chromosome theory (also known as the chromosome theory of inheritance of the Sutton -Boveri theory) is a fundamental unifying theory of genetics which identifies chromosome as the camers of genetic material.It correctly explains the mechanism underlying the laws of Mendelian inheritance by identifying chromosome with the paired factors (particles) required by Mendel's laws. It also states that chromosome are linear structures with genes at specific sites called loci along time