Question

p53 is a tumor suppressor gene. How does this gene normally prevent cancer in your cells?(1 point)
Responses

A transcription factor binds to the promoter of genes that stop cells from from duplicating themselves when DNA is damaged
A transcription factor binds to the promoter of genes that stop cells from from duplicating themselves when DNA is damaged

It produces a repressor protein that binds to an operon and stops further gene transcription.
It produces a repressor protein that binds to an operon and stops further gene transcription.

It stops RNA polymerase from binding to any DNA, halting all replication in the cell.
It stops RNA polymerase from binding to any DNA, halting all replication in the cell.

A transcription factor binds RNA polymerase, stopping the cell from getting large enough to be able to split in half and continue making cancerous cells.

Answer 1

A transcription factor binds to the promoter of genes that stop cells from duplicating themselves when DNA is damaged.

Explanation: p53 is a transcription factor that activates genes (e.g., p21) that cause cell-cycle arrest, promote DNA repair, or trigger apoptosis when DNA is damaged, preventing propagation of mutations that could lead to cancer.