Question

A G1 checkpoint fails to recognize a mutation in the DNA. What will most likely occur when the mutation is passed through to the S phase of the cell cycle?

A.
The cell will make copies of the mutation.

B.
The cell will divide into more daughter cells.

C.
The cell will immediately begin apoptosis.

D.
The cell will separate fewer chromosomes.

Answer 1

A. The cell will make copies of the mutation.

Explanation: If the G1 checkpoint fails to detect DNA damage, the cell enters S phase and replicates its DNA. Any unrecognized mutation will be copied during DNA synthesis and thus propagated into daughter DNA molecules and later into daughter cells.