You are attempting to determine whether a plant-derived processed food sample (for example, a

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corn chip) contains material from a genetically-modified organism (GMO). First, you crush the sample
and attempt to extract DNA from it. Next, you perform PCR using two different sets of primers. One
primer set will amplify a DNA sequence present in all plants. The second primer set will amplify a DNA
sequence only found in GMO plants.

1) Why must you use both sets of primers for this experiment?
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