Which of the following statements is TRUE? Spontaneous mutations are more likely to occur than induced mutations. DNA Polymerase I is involved in the transcription process in prokaryotes but not eukaryotes. Deaminating agents add amino groups to DNA nucleotides, changing the chemical structure of that nucleotide, and prevent DNA replication. UV radiation is called "ionizing" because ions form that bind to and damage DNA. Exposure to X -ray radiation can cause the covalent bonds in the sugar phosphate backbone of DNA to break..