Using gene sequencing and PCR Quiz
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5 questions, one answer each
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1. Which statement describes the extension step of PCR?
- A. Primers bind to the template
- B. Hydrogen bonds between strands break
- C. Taq polymerase adds nucleotides to the primers
- D. Restriction enzymes cut the DNA
2. A PCR starts with one DNA molecule. How many copies are there after 5 cycles?
- A. 10
- B. 25
- C. 32
- D. 64
3. Why are STRs useful for DNA profiling?
- A. They code for important proteins
- B. The number of repeats varies between individuals
- C. They are identical in all humans
- D. They are found only in the Y chromosome
4. A child has bands 2, 4 and 6. The mother has bands 2 and 6. Which father is consistent?
- A. Bands 1 and 3
- B. Bands 2 and 6
- C. Bands 4 and 7
- D. Bands 5 and 7
5. What is the mRNA codon transcribed from template triplet GGA?
- A. CCU
- B. CCA
- C. GGA
- D. CCT