What are the drawbacks of the STR technique?

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 of use, it is used differently around the world, for example, in the North America 13 loci cores are used for STR analyzis compared to the UK with 17 loci cores, however, the same style is followed. The future of the STR is going to be full of uses of it, as it will be a choice of the foreseeable future because of their use widely in the national DNA bases. This can also develop into specific genetic based profiles with different STRs for different people making it a unique profile to identify someone almost as good as fingerprints and even better.

STR comes with some downs as it may raise concern by violating someone’s privacy, this can be due to some people disliking their genetic information to be taken, especially if they were innocent, another negative aspect of using STR is the access of the third party to it like business of organizations without the permission of the individual, also if innocent people were at the crime scene and somehow their sample ended up in the labs of forensics it could be used against them which is another downside.