Major Features of the Gene.- The Enzymes of Transcription and Transfer RNA Genes.- The 5 S Ribosomal and Other Small RNAs.- The Remaining Ribosomal RNA Genes.- Nucleic Acid-Associated Protein Genes.- Genes for Energy-Related Proteins.- Complex Genes.- Assembled Genes.- Transposable Elements.- Viral Genes — Structure and Controls.- The Gene in Cancer.- Processing the Primary Transcripts.