DNA Fingerprinting

The video tutorial explains DNA fingerprinting, a technique developed by Alec Jeffreys in 1985, used for comparing DNA samples to solve crimes and confirm relationships. It highlights the process of DNA profiling, focusing on short tandem repeats (STRs) and the steps involved in collecting and analyzing DNA samples. The tutorial includes case studies on crime scene investigation and soldier identification, demonstrating practical applications of DNA profiling. Viewers are encouraged to engage with the content by sharing and commenting.

Who developed the technique known as DNA fingerprinting?

• Rosalind Franklin

• Alec Jeffreys

• James Watson

• Francis Crick

What percentage of DNA is analyzed in DNA profiling to find differences between individuals?

• 10%

• 0.1%

• 99.9%

• 50%

What are the repeated sequences in DNA profiling called?

• Base pairs

• Gene sequences

• Short tandem repeats

• Long tandem repeats

Which technique is used to make many copies of DNA in the profiling process?

• Restriction endonuclease

• Polymerase chain reaction (PCR)

• Southern blotting

• Gel electrophoresis

In the example of identifying a soldier, how much of his DNA does he share with each parent?

• 75%

• 100%

• 25%

• 50%