The Real Science of Forensics

The video explores the portrayal of forensic science in crime shows, highlighting the differences between TV dramatizations and real-life forensic techniques. It introduces a hypothetical crime case to explain forensic methods like livor, rigor, and algor mortis, and discusses the challenges of image enhancement and facial recognition in investigations. The video also covers the Kastle-Meyer test for blood detection and DNA analysis, emphasizing the scientific processes involved in solving crimes.

What is the primary role of forensic investigators in crime shows?

• To entertain the audience with dramatic scenes

• To use science to find, gather, and analyze evidence

• To solve crimes within a single episode

• To portray unrealistic technology

Which of the following is NOT a method used to estimate time of death?

• Livor mortis

• Rigor mortis

• Color mortis

• Algor mortis

Why can't digital images be enhanced like on TV shows?

• Because the technology is too expensive

• Because digital images are too small

• Because the average color of pixels cannot be broken down further

• Because cameras don't capture enough pixels

What is a faceprint in the context of facial recognition?

• A set of measurements of facial features

• A unique pattern of colors in a photo

• A fingerprint of the face

• A digital signature of a person's voice

What is the purpose of the Kastle-Meyer test?

• To determine the time of death

• To identify a suspect's face

• To test if a stain is blood

• To enhance digital images

How does STR analysis help in DNA profiling?

• By comparing DNA with a global database

• By analyzing repeating sections of base pairs

• By sequencing the entire DNA

• By identifying the color of the DNA

What is the probability of two people having the same STR profile?

• One in a thousand

• One in a billion

• One in a million

• One in a hundred