Multiple choice

________ are used to select genes of interest from a genomic library.

  1. Restriction enzymes

  2. Cloning vectors

  3. DNA probes

  4. Gene targets

  5. Antibodies
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C Correct answer
Explanation

DNA probes are labeled single-stranded DNA sequences complementary to the target gene of interest. When added to a genomic library, they hybridize specifically to their complementary sequences through base pairing, allowing researchers to identify and select clones containing the desired gene. This is called colony or plaque hybridization.

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