This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
Which of the following process in a vector is used to increased the yield of protein produced in recombinant protein synthesis? 
Select and explain. 
A. Promoter induction, B. Origin of Replication, C. Translation Initiation, D. Translation of Transcription inhibition
A: Promoter induction
Answer: A: Promoter induction 
Explanation: Expression vectors are plasmids/viruses designed to regulate protein expression in a target cellThey are used to inse a specific gene into the target cell to produce the desired proteinThey contain regulatory sequences which act as enhancer and promoter regions to bring about efficient transcription of the geneAn inducible promoter regulates the gene expression and can increase the yield of the recombinant proteinRef: <a href="