Which of the following is an application of DNA profiling?

• A. Forensics (solving crimes) and paternity testing
• B. Determining blood glucose
• C. Measuring enzyme activity
• D. Calculating metabolic rate

Answer: (A)

DNA profiling relies on analyzing variable regions of the genome to create a unique DNA pattern for an individual. In forensics, a DNA profile from a crime scene can be matched to a suspect, helping to identify who was involved in the crime. In paternity testing, a child’s DNA profile is compared with that of the alleged parent to determine if they share the expected inherited markers. The other options involve measuring biochemical or physiological traits, such as blood glucose, enzyme activity, or metabolic rate, which are not based on DNA patterns. Therefore, the best application is in forensics and paternity testing.