This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
In molecular cloning, Blue-white screening is used for? 
Select and explain. 
A. To screen for recombinant vectors, B. To detect gene mutations, C. To identify desired chromosomal DNA insert in plasmid vectors, D. To detect host DNA in situ
C: To identify desired chromosomal DNA insert in plasmid vectors
Answer: C: To identify desired chromosomal DNA insert in plasmid vectors 
Explanation: None