What effect does a drug that stops the function of DNA polymerase have on DNA?

A drug that stops the function of DNA polymerase would block the replication of DNA. DNA polymerase is a crucial enzyme responsible for synthesizing new DNA strands during the replication process. It adds nucleotides to the growing DNA strand, ensuring that the genetic information is accurately copied for cell division. When the function of DNA polymerase is inhibited, cells cannot replicate their DNA, leading to potential cell cycle arrest and an inability to divide properly.

The other options relate to different processes involving RNA and protein synthesis rather than DNA replication. For instance, transcription involves synthesizing RNA from a DNA template, and stopping DNA polymerase would not directly affect transcription. Similarly, tRNA binding to mRNA pertains to the translation phase of protein synthesis, while peptide bond formation is a step within the protein synthesis process involving ribosomes, not directly related to DNA polymerase's role. Hence, blocking DNA replication is the specific effect of inhibiting DNA polymerase.