Which description best explains the role of dna im the differentiation of the cells within an organism? a. each cell has a different set of dna that determines the traits of the cell and causes differentiation. b. each cell has the same dna, so dna does not play a role in differentiation. c. cells do not use the same sections of dna in the same proportions, at the same time in development, which leads to differentiation. d. dna mutates differently in each cell depending in the environment causing each cell to differentiate over time.