This page discusses DNA mutations resulting from replication errors and defective repair mechanisms. It highlights the Ames test for detecting mutagenic chemicals in organisms, the impact of ionizing ...This page discusses DNA mutations resulting from replication errors and defective repair mechanisms. It highlights the Ames test for detecting mutagenic chemicals in organisms, the impact of ionizing radiation on DNA, and the role of transposons (or "jumping genes") in generating mutations by relocating within the genome.