Final answer:
DNA profiling was less useful for identifying remains after the 2004 tsunami due to the advanced decomposition of the remains, making DNA samples difficult to analyze accurately. Forensic geneticists faced challenges with DNA degradation and contamination, which are not as prevalent in regular criminal cases with fresher samples.
Step-by-step explanation:
DNA profiling was less useful in identifying remains from the 2004 tsunami because the remains were too decomposed. Decomposition affects the quality and integrity of DNA, making it difficult to obtain a full genetic profile. In contrast to criminal cases where forensic scientists can typically access fresher samples, the elements after the tsunami, particularly water and increased temperatures, caused rapid degradation of genetic material.
Forensic geneticists rely on the stable and intact DNA to match with potential relatives or missing person's records. In the aftermath of the tsunami, obtaining such intact DNA became highly challenging, which impeded the identification efforts. The DNA could also be contaminated during the collection process or by other environmental factors, further complicating the situation.
Although DNA profiling is a powerful tool in solving crimes and identifying individuals, it was less effective in the 2004 tsunami disaster scenario due to the degraded state of the remains and the contamination issues that commonly arise in such large-scale natural disasters.