1.) In what two different ways do bacteria “sense” the amount of trp in the environment? Describe both mechanisms in detail.
2.) Attenuation as accomplished in the trp operon is not possible in eukaryotes. Explain why not, concisely, including a synopsis of how attenuation works in trp.
3.) What are two hypotheses for the role of RNA silencing (i.e. RNAi)? Be brief.