DNA Fingerprinting Concepts and Applications

The video tutorial explains DNA fingerprinting, also known as DNA profiling, which determines an individual's DNA characteristics. It covers the principle that only 5% of DNA is used for genetic coding, while the rest are redundant segments unique to each person. The technique involves extracting DNA, cutting it into fragments, and using gel electrophoresis and Southern blotting to create a unique DNA pattern. The video also highlights the medical and legal importance of DNA fingerprinting, such as in crime investigations and paternity tests.

What is another term for DNA fingerprinting?

• DNA profiling

• Gene editing

• Genetic mapping

• DNA sequencing

What percentage of DNA is used for genetic coding?

• 10%

• 5%

• 50%

• 95%

What are the repetitive DNA sequences also known as?

• Microsatellites

• Hypervariable regions

• Exons

• Coding regions

Which enzyme is used to cut DNA into fragments during DNA fingerprinting?

• Restriction enzyme

• Helicase

• Ligase

• DNA polymerase

What technique is used to separate DNA fragments into bands?

• PCR

• Gel electrophoresis

• Northern blotting

• Southern blotting

What is used to detect radioactive patterns in DNA fingerprinting?

• Infrared light

• Fluorescent dye

• X-ray film

• Ultraviolet light

How unique are DNA fingerprints compared to regular fingerprints?

• Less unique

• Equally unique

• More unique

• Not unique

In what scenario is it almost impossible for two people to share the same DNA sequence?

• Siblings

• Identical twins

• Cousins

• Unrelated individuals

Which of the following is NOT a use of DNA fingerprinting in legal contexts?

• Exonerating falsely accused individuals

• Establishing paternity

• Identifying unknown individuals

• Predicting future diseases

How can DNA fingerprinting help in crime investigations?

• By determining the time of crime

• By identifying the weapon used

• By matching blood samples to individuals

• By predicting criminal behavior