KROK 1 2015 – Question 112 · KROK (Medicine) · Biological Chemistry
A doctor was addressed by a 30-yearold man. There is a probability of the patient being HIV-positive. To clarify the diagnosis the doctor proposed to perform polymerase chain reaction. The basic process in this kind of investigation is:
- A. Gene amplification
- B. Transcription
- C. Genetic recombination
- D. Chromosome mutation
- E. Genomic mutation
Hint
Think about what happens to a chosen DNA fragment over the repeated temperature cycles of PCR, and why that helps to detect a very small amount of viral material.
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