Figure 2: Results of four single locus DNA electrophoresis gels conducted on Darrell, his mother Hannah, and three male patients from the fertility clinic. Four different locations on each person’s genome were analyzed for the number of VNTRs (Variable Number Tandem Repeats) found in relation to a standard sample of VNTRs of known lengths. Strands of similar length are pulled “down” similar distances through a gel by an electrical current resulting in “bands” that can be stained and read.
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