Lily is researching the light-sensing rod cells of the eye. She decides to use stem cells to produce new rod cells. Which statement best explains why Lily is using stem cells for this purpose?\

A.
Specific genes in a rod cell’s DNA can be activated to produce new stem cells.
B.
Specific genes in a stem cell’s DNA can be activated to produce new rod cells.
C.
All genes in a rod cell’s DNA are activated, so new stem cells are produced each time the cell divides.
D.
All genes in a stem cell’s DNA are activated, so new rod cells are produced each time the cell divides.
E.
None of the genes in a rod cell’s DNA are activated, so new rod cells can be produced only from stem cells.

Stem cells can be defined as the cells that have the ability to form any specialized type of cells. These undifferentiated cells have the potential to differentiate to form the different cell types. These stem cells can be derived either from the embryo or from certain adult tissues. Certain genes are activated in these cells to form a specific type of the cell. Lily used the stem cells so that certain genes can be activated in them to produce the new rod cells.

Hence, the correct answer is 'Option B'.