An advantage of using reverse transcriptase to prepare a gene for cloning is that

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Reverse transcriptase is an enzyme that can convert RNA into cDNA (complementary DNA). This method is commonly used to prepare genes for cloning because the resulting cDNA lacks introns (non-coding regions of DNA found in eukaryotic genes). This simplifies the cloning process as it eliminates the need to splice out introns prior to cloning. Therefore, option B is the best choice. Option A and D are incorrect because there is no comparison between the efficiency of reverse transcriptase to RNA or DNA polymerase. Option C is incorrect as the resulting cDNA would contain exons which are the coding regions of the gene.

An Advantage of Using Reverse Transcriptase to Prepare a Gene