Explain how DNA foot printing is used to identify promoter regions.

Describe the structure and function of prokaryotic RNA polymerase and the role of the sigma factor in transcription initiation. 

Discuss the production of recombinant insulin and analyze the safety concerns associated with genetically modified crops. 

Describe major applications of recombinant DNA technology in medicine and agriculture.

Discuss the role of protein engineering in the development of biopharmaceuticals and industrial enzymes.

Describe the principle of site-directed mutagenesis and outline the commonly used techniques.

Explain the challenges in producing recombinant proteins in E. coli and the role of fusion tags in purification.

Describe the principle of Sanger's DNA sequencing method.

Explain how real-time PCR is used for quantitative analysis of gene expression.

Describe the concept of gene libraries and the need for clone identification.

Describe how recombinant phages are identified during bacteriophage-based cloning experiments.

Explain the principles of insertional inactivation and blue-white selection.

Explain the use of electroporation for DNA transfer into animal cells and its advantages over chemical methods.

Describe the methods used for introduction of recombinant DNA into bacterial cells.

Describe how linkers, adapters, and synthetic oligonucleotides are used to clone blunt-ended DNA fragments.

Explain the role of DNA ligase in joining DNA fragments and differentiate between sticky and blunt ends.

Explain the choice of suitable eukaryotic vectors for expression of a human gene in yeast or plant systems.

Describe the types of vectors used for gene cloning in yeast, plants, and animal cells.

Compare pUC and bacteriophage-based vectors and justify their use for cloning genes of different sizes.

Describe the essential features of an ideal cloning vector and explain the structure of pBR322.