(2) Cells in multicellular organisms differentiate to carry out specialized functions by expressing some of their genes but not others

Every cell in a multicellular organism can code for all the genes of that organism. 

However activation of these genes varies from cell to cell and changes the function of the cell. Cells in the eyes are not the same as that of your fingernails. 

Different genes are activated in different cells. 

Example: Gene that produces…