Final answer:
DNA profiling is the best scientific method for postmortem identification that is quick, inexpensive, and uses a large database for comparison.
Step-by-step explanation:
Best Method for Postmortem Identification
The most efficient and cost-effective scientific method for postmortem identification that also benefits from a sizable database for comparative analysis is DNA profiling. This technique involves analyzing the DNA found in tissue samples such as blood or skin cells. It is preferred because (1) it is quick, (2) it is relatively inexpensive compared to other methods, (3) it does not require extensive taxonomic expertise, and (4) it has the support of a large database of DNA profiles which helps in making accurate identifications. DNA profiling is widely used in the fields of forensic anthropology and forensic genetics, where it plays a crucial role in investigations by providing information about who the deceased was, as well as potentially indicating the cause and time of death.
Moreover, DNA identification can be used even with fragmented specimens or in cases where morphological characteristics are absent. This method aligns with the needs of hazard analysis as opposed to life tables in paleodemographic studies, as well as for rapid detection and monitoring of non-native species. A robust database enhances the reliability and speed of postmortem identification, making DNA profiling the preferred approach for both academic research and practical application in forensic science.