<prompt> The following technique is used to analyze DNA obtained from cancer biopsies, in which tumor cells are often contaminated with large numbers of admixed stromal cellsSanger sequencingSingle base primer extensionPyrosequencingAmplicon length analysis  <response>: Ans. c PyrosequencingRef: R 9thpg 140; 8thpg 140Pyrosequencing:Highly sensitive than Sanger sequencing and can detect even 5 mutated DNAFor this reason, it is be used to analyze DNA obtained from cancer biopsies, in which tumor cells are often contaminated with large numbers of admixed stromal cells. 