A Technician Who Is Doing DNA Typing Uses the Polymerase

question 34

Multiple Choice

A technician who is doing DNA typing uses the polymerase chain reaction to amplify genomic DNA corresponding to three different variable number tandem repeats (VNTRs) in the human genome. The pair of primers for each VNTR is labeled with a different fluorescent dye, so that the bands from one VNTR fluoresce blue, those from another fluoresce red, and those from the third fluoresce green. A sample (W) containing DNA from an unknown individual is compared to genomic DNA from five individuals (A-E) . Which individual's VNTR bands match those in the sample?

• A)individual A
• B)individual B
• C)individual C
• D)individual D
• E)individual E