The STR profile you just calculated used 6 loci. Is this sufficient to identify whether this is a suspects DNA? Why/ why not?
Question
The STR profile you just calculated used 6 loci.
Is this sufficient to identify whether this is a suspect's DNA?
Why/ why not?
Solution
The sufficiency of using 6 loci in a Short Tandem Repeats (STR) profile to identify a suspect's DNA can vary and depends on several factors.
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Uniqueness of the STR Profile: If the 6 loci used in the STR profile are highly variable in the population, it might be possible to uniquely identify a suspect. However, the more loci used, the higher the power of discrimination, which increases the likelihood of a unique match.
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Population Data: The effectiveness of using 6 loci also depends on the availability of population data. If there is a comprehensive database that includes STR profiles of a large and diverse population, it might be possible to identify a suspect using only 6 loci.
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Quality of the DNA Sample: The quality and quantity of the DNA sample can also affect the sufficiency of 6 loci. If the DNA sample is degraded or contaminated, more loci might be needed to obtain a reliable STR profile.
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Legal Standards: Different jurisdictions have different standards for what constitutes a match. In some places, matching at 6 loci might be considered sufficient, while in others, more loci might be required.
In general, while it might be possible to identify a suspect using an STR profile with 6 loci, using more loci would increase the reliability and accuracy of the identification. Therefore, it's typically recommended to use more than 6 loci for forensic DNA profiling.
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