Unraveling DNA Fingerprinting in Forensic Science

The video explains how DNA fingerprinting is used to identify individuals from crime scene samples. It covers the process of extracting DNA, cutting it into fragments, and using gel electrophoresis to separate these fragments. The resulting DNA patterns are unique to each person and can be compared to samples from suspects to identify a match.

What is the primary purpose of DNA fingerprinting in forensic science?

• To create a genetic database

• To determine a person's ancestry

• To identify individuals involved in a crime

• To study genetic diseases

Which of the following is NOT a sample that can be collected from a crime scene for DNA analysis?

• Saliva

• Hair

• Skin

• Blood

What is the role of enzymes in the DNA fingerprinting process?

• To replicate DNA

• To color DNA fragments

• To bind DNA fragments together

• To cut DNA into shorter fragments

How are DNA fragments separated during the fingerprinting process?

• By heating them

• By using a magnetic field

• By spinning them in a centrifuge

• By applying an electric current

What determines the distance traveled by DNA fragments in a gel?

• The size of the fragments

• The color of the fragments

• The pH level of the gel

• The temperature of the gel

What conclusion can be drawn if two DNA patterns match?

• The samples are contaminated

• The samples are from different people

• The samples are from the same person

• The samples are from related individuals