What would occur if there was a gain-of-function mutation in the promoter for the cyclin e gene such that cyclin e protein was always made at high levels even under conditions in which cyclin e would not normally be made?

b) Cells will pass through the G1/S checkpoint even if conditions are not ideal for cell division.

Explanation:

In the given problem, if there exists a gain-of-function mutation for the given cell, there would not be the formation of cyclin E when there is the possibility of cells movement via the checkpoint of the G1/S, even when there are non-deal conditions for the division of cell. Thus, the correct option in the lists of options is the option b.

to treat tumors in the body