- A Southern blot
- B DNA microarray (gene chip)
- C PCR only
- D Gel electrophoresis
Correct answer: B. DNA microarray (gene chip)
Explanation: DNA microarray: thousands of probes on a chip hybridize to cDNA from cells, allowing simultaneous measurement of expression of thousands of genes.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
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