DNA Profiling and Analysis Concepts

The video tutorial explains DNA fingerprinting, a technique developed by Alec Jeffries in 1985, which allows for the comparison of DNA samples to identify similarities and differences. This method is used in crime solving and paternity testing by analyzing the 0.1% of DNA that varies between individuals. The process involves collecting a DNA sample, amplifying it using PCR, and analyzing it through gel electrophoresis. The video also includes practical applications and case studies, such as identifying a suspect in a burglary and determining a soldier's identity. Viewers are encouraged to engage with the content by liking, sharing, and commenting.

Who developed the technique of DNA fingerprinting?

• Francis Crick

• James Watson

• Rosalind Franklin

• Alec Jeffries

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

• 0.1%

• 100%

• 99.9%

• 50%

What is the role of PCR in DNA profiling?

• To stain DNA

• To sequence DNA

• To amplify DNA samples

• To cut DNA into pieces

What is the purpose of gel electrophoresis in DNA profiling?

• To extract DNA

• To sequence DNA

• To amplify DNA

• To separate DNA fragments by size

In the context of DNA profiling, what does STR stand for?

• Standard Tandem Repeat

• Simple Tandem Repeat

• Short Tandem Repeat

• Single Tandem Repeat

How is DNA transferred to a nylon sheet in the profiling process?

• Eastern blotting

• Southern blotting

• Western blotting

• Northern blotting

In a crime scene investigation, which suspect's DNA matched the sample left at the scene?

• Suspect 3

• Suspect 2

• Suspect 1

• Suspect 4

What is the significance of matching DNA bands in profiling?

• It shows a match between samples

• It confirms a genetic disorder

• It reveals ancestry

• It indicates a mutation

How much of a soldier's DNA is shared with each parent?

• 100%

• 75%

• 50%

• 25%

What is the primary use of DNA profiling in the military context described?

• To train soldiers

• To develop new weapons

• To track enemy movements

• To identify soldiers