What is the purpose of Blue-White screening in molecular cloning?

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To select recombinant plasmidsTo identify mutations in genesTo confirm the presence of target chromosomal DNA inserted into plasmid vectorsTo locate host DNA within cells

Explanation

Blue-White screening is primarily used to distinguish plasmids that contain the desired chromosomal DNA insert from those that do not. This method helps identify recombinant plasmids by producing white colonies when the insert disrupts the lacZ gene, while non-recombinant plasmids produce blue colonies.