Essay 1.
Compare and contrast the use of plasmids and bacteriophage vectors in gene cloning.  Your answer should include diagrams of named vectors, a description of standard protocols for their usage and an analysis of the advantages and disadvantages associated with each vector type.
Essay 2.
Analyse the features of the polymerase chain reaction which have made it an essential tool for scientists from biomedical research to forensic investigations.  Include; descriptions of the components of a PCR reaction and the thermocycle, analysis of the specificity and sensitivity of PCR and discussion of named applications of PCR.