The gel diagram shown represents analysis of blood from a victim of a crime and from two suspects. criminologists created this gel using a single tandem repeat site.
Question: The gel diagram shown represents analysis of blood from a victim of a crime and from two suspects. criminologists created this gel using a single tandem repeat site.
A single tandem repeat (STR) site is a particular type of DNA analysis used for identification. In the gel diagram, each peak that is generated represents a pattern of DNA fragments that have been amplified from the sample. These fragments all correspond to the same STR site and contain repeating sequences, whose number indicates the individual.
The two suspects are represented by the two peaks on either side of the central peak. The central peak represents the victim's DNA and the peaks on either side represent the suspects' DNA patterns. When compared to the victim's DNA, the suspect DNA patterns should match if they are the same person. If the peaks do not match, it can be concluded that the suspects are not the same person as the victim.
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