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One way of identifying a bacterium that causes a disease is to use PCR and gel electrophoresis. This process works even when many other types of bacteria are present because A. PCR increases the amount of specific DNA sequences. B. other bacteria can't survive the PCR reaction. C. the disease-causing bacterium is larger than most other bacteria. D. PCR increases the amount of DNA from harmful bacteria only.
Two applications of transgenic organisms are:
- creation of plants with desired characteristics
- modelling human diseases
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