Which of the following is a type of scientific identification?

• A. Comparative medical/dental radiography
• B. Karyotyping
• C. Isotope analysis
• D. Toxicology screening

Answer: (A)

Comparative medical/dental radiography is a type of scientific identification because it directly uses radiographic imaging to establish who someone is by matching antemortem records with postmortem findings. Dental radiographs and other medical images capture unique features such as tooth morphology, restorations, implants, and bone structure that, when they correspond precisely to records from a specific person, provide a reliable, objective link to identity. This method is especially powerful when such radiographs exist before death and can be accurately compared to the decedent's postmortem images.

Karyotyping looks at chromosome structure and is used for diagnosing chromosomal disorders, not for identifying an individual. Isotope analysis can reveal geographic origins or dietary information but does not produce a definitive person-to-record match. Toxicology screening identifies chemicals or drugs present in the body and helps interpret cause or context of death, not identity.