1. The author suggests that understanding the way of evidence proving the conclusion is more important than the conclusion itself.
2.Chapter 1-4 tells the background knowledge about genetics.
3.Chapter 5 presents a number of molecular techniques which proposed to learn after encounterng in later Chapters.
4. Chapter 6-13 elaborates separately the transcription of bacteria and eukaryotes, including the process, RNA polymerase, and every factor how regulates transcription.