Before revision: A cell's level of is defined by the number of copies it has of each specific chromosome: if a cell 's genetic material is divided between three distinct chromosomes, and there are two copies of each , it is said to be (2N) .
After revision: A cell's level of is defined by the number of copies it has of each specific chromosome: if the cell has two copies each , it is said to be (2N) of three distinct chromosomes