Question

What is the role of DNA in 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 leading to differentiation.
D
DNA mutates differently in each cell depending on the environment causing each cell to differentiate over time.

Answer 1

C

All cells in a multicellular organism contain the same DNA, but different cell types express different sets and amounts of genes (and at different times) via gene regulation and epigenetic controls, producing cell differentiation.