Isotopic Analysis in Forensics

The video tutorial explains isotopic analysis, focusing on how tissues are destroyed during the process. It covers the use of isotopic analysis in biological profiling to determine if a person is a resident of a specific area. The tutorial details the collection and analysis of samples like teeth, ribs, and femurs, and discusses isotopic techniques involving strontium, oxygen, carbon, and nitrogen. Applications in historical contexts, such as identifying individuals in commingled graves, are highlighted. The video also addresses the cost and accessibility of isotopic analysis services.

What is the primary purpose of isotopic analysis in forensic cases?

• To identify the cause of death

• To confirm or disconfirm the individual's origin

• To reconstruct the individual's appearance

• To determine the age of the individual

Which tissue sample can provide information about an individual's location over the past five years?

• Fingernail

• Hair

• Tooth

• Rib

What type of sample can provide information about an individual's location over the past few months?

• Femur

• Tooth

• Rib

• Hair

What is the preferred tooth for isotopic analysis when available?

• First permanent molar

• Canine

• Incisor

• Wisdom tooth

What isotope is primarily obtained from drinking water?

• Strontium

• Nitrogen

• Oxygen

• Carbon

Which isotope is geologically specific and can be used to determine the local environment?

• Hydrogen

• Strontium

• Carbon

• Nitrogen

Which isotope is primarily used to analyze dietary habits?

• Carbon

• Oxygen

• Hydrogen

• Strontium

How can isotopic analysis help in identifying individuals in commingled graves?

• By measuring bone length

• By analyzing bone density

• By examining DNA sequences

• By assessing dietary differences

What is the main dietary difference used to distinguish between Americans and Asians in isotopic analysis?

• Corn vs. Rice

• Wheat vs. Barley

• Meat vs. Vegetables

• Fish vs. Poultry

What is the approximate cost for analyzing three tissue samples for isotopic analysis?

• $500

• $1500

• $1000

• $100