What are the drawbacks of the STR technique?

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STR is becoming more popular as a DNA marker, this is due to the fact that they are easily modified by PCR, which gives products that are in similar amounts. This makes the analysis much easier. For identification of human purposes, the STR chosen for analyzis should be the most varied so it can give more reliable results, however, this can be quite challenging in some cases like sexual assault as the DNA samples would be mixed or degraded or so, therefore results would not be accurate. Even though STR has the same bases...
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