Forensic DNA Profiling

What is DNA fingerprinting?

• DNA fingerprinting is a method used to determine a person's blood type.

• DNA fingerprinting is a technique used to analyze fingerprints left at a crime scene.

• DNA fingerprinting is a process used to identify individuals by analyzing their hair samples.

• DNA fingerprinting is a technique used to identify individuals by analyzing their unique DNA patterns.

What is the main advantage of PCR in DNA analysis?

• Ability to analyze multiple DNA samples simultaneously

• Amplification of specific DNA sequences

• Faster analysis time compared to other methods

• Increased sensitivity in detecting DNA samples

What are the steps involved in PCR?

• Denaturation, Annealing, Extension

• Inactivation, Attachment, Elongation

• Separation, Hybridization, Replication

• Melting, Binding, Amplification

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

• Identifying genetic disorders

• Determining eye color

• Comparing DNA profiles to identify individuals

• Analyzing food composition

Which of the following statements is true about DNA profiling?

• It identifies individuals based on genetic mutations.

• It compares short tandem repeats (STRs) in non-coding DNA regions.

• It always requires an exact match to prove guilt.

• It only works on living subjects.

Reorder the following steps of the DNA Profiling method:

• Obtain DNA samples from the crime scene and suspects.

• Amplify the STR regions of DNA using Polymerase Chain Reaction (PCR).

• Cut the DNA into fragments using restriction enzymes.

• Run the fragments through a gel using gel electrophoresis.

• Compare the banding pattern of the DNA fingerprints. Then interpret the results to identify the suspect.

Which part of DNA is used in DNA profiling?

• The coding regions

• The non-coding regions

• Only the genes

• RNA molecules

What is the role of enzymes in DNA fingerprinting?

• To amplify DNA sequences

• To cut DNA at specific points

• To bond DNA strands together

• To add color to DNA

Which laboratory technique is used to separate DNA fragments by length?

• Polymerase Chain Reaction (PCR)

• Gel Electrophoresis

• DNA Sequencing

• Gene Cloning

How does gel electrophoresis separate DNA fragments?

• By their color

• By their electrical charge

• By their size and length

• By their temperature