Genetic fingerprinting Quiz
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5 questions, one answer each
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1. Where are VNTRs found?
- A. In the coding regions of genes
- B. Only in mitochondria
- C. Only in the sex chromosomes
- D. In non-coding DNA
2. Why can DNA be separated by electrophoresis?
- A. It is positively charged
- B. It is negatively charged because of its phosphate groups
- C. It is uncharged but of different sizes
- D. It is attracted to the gel
3. In a gel, which band was formed by the smallest DNA fragment?
- A. The band nearest the wells
- B. The band in the middle of the gel
- C. The band furthest from the wells
- D. All bands are the same size
4. A child has bands of 800, 500 and 300 bp. The mother has 800 and 300 bp. Which band must have come from the father?
- A. 800 bp
- B. 300 bp
- C. 500 bp
- D. None of them
5. In population A, 90% of animals share the same VNTR pattern. In population B, 15% do. Which is the most likely conclusion?
- A. A is at greater risk from disease because variability is low
- B. B has lower genetic variability than A
- C. A and B have the same variability
- D. B is more inbred than A