KROK 1 2017 – Question 188 · KROK (Medicine) · Biology

A young family came for a genetic counseling to identify the father of their child. The husband insists that the child does not resemble him at all and cannot possibly be his. Polymerase chain reaction method for person identification is based on the following:

  1. A. Genetic recombination
  2. B. Missense mutation
  3. C. Nucleotide deletion
  4. D. Transduction
  5. E. Gene amplification
Hint

Think about what repeated cycles of denaturation, annealing and extension do to a chosen short DNA segment, rather than to its sequence.

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