El ADN y los delitos

The video tutorial explains the role of DNA as a genetic fingerprint in crime investigation. It covers the history of DNA analysis techniques, starting from the 1960s when large amounts of biological material were needed, to the development of genetic fingerprinting in the 1980s. The tutorial highlights the creation of DNA databases and the introduction of the polymerase chain reaction (PCR) technique, which allows for the analysis of minute DNA samples. The impact of these advancements on forensic science and crime-solving is emphasized, showcasing how genetic fingerprinting has become a crucial tool in achieving a safer world.

What percentage of human DNA is identical across all individuals?

• 75%

• 99%

• 50%

• 100%

Which technique was developed in 1984 that revolutionized crime investigation?

• Blood Typing

• Fingerprint Analysis

• Restriction Fragment Length Polymorphism

• Polymerase Chain Reaction

In what year was DNA first used to attribute a crime to a person?

• 1987

• 1960

• 1984

• 1997

What is the main advantage of the polymerase chain reaction in forensic science?

• It is used for blood typing.

• It only works with blood samples.

• It can analyze minute amounts of DNA.

• It requires a large amount of DNA.

What can a single hair or drop of blood at a crime scene provide?

• Eye color determination

• Fingerprint analysis

• A complete DNA profile

• Blood type information