How do stem cells know what type of cells to differentiate into? A. The nucleus has instructions to turn some genes on and some genes off
B. Genes turn on and off randomly
C. Signals from chemicals in the organism or from the environment determine which genes will be turned on and off
D. The cell has unique DNA that determines what the cell will become.

the framers of the constitution insisted that federal judges be nominated instead of elected due to their desire to have judges above the shifting whims of the masses.

the hope, whether achieved or not, was that federal judges would only be beholden to the law and that by not having judges be elected, they would be protected if that law dictated an outcome that ran counter to popular opinion.

a physical change is being made.