+ Select the template: the template does not represent, or degeneratedSecond, regarding the sample selection techniques, when many samples are not representative, atypical, or model be degenerative. However with new techniques PCR/STR mentioned above can overcome this drawback, but this technique is not for high accuracy.+ Reliability of data in populationsAlso in the issue analysis results, need to mention the reliability of data in populations (population data). For example, the FBI has built a statistical data system reference for populations of white, black, coloured and Asian population. The problem is right in every ethnic group that also have the variation (such as the East Asia include Asia, West Asia, South East Asia, etc.) Meanwhile the probability to match was a model of DNA with a sample in the reference populations is very low (a part 6 million!), so this probability may be higher if using the reference populations of the Group (can increase to 1/800000).
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