DNA forensics

Mitochondrial DNA is different from nuclear DNA because (CHOOSE TWO)...

• It is inherited only from the mother

• It is inherited only from the father

• It is in the shape of a circular loop

• It is in linear strands

What is the purpose of PCR?

• Create many copies of DNA fragments

• Create a DNA fingerprint

• Remove DNA from a sample

• Cut the DNA into smaller pieces

Which suspect should be charged with the crime?

• Suspect 1

• Suspect 2

• Suspect 3

• None of these suspects

Biological evidence is used in forensics for DNA identification purposes. Biological evidence includes ...

• blood

• saliva

• urine

• all of these

Restriction Enzymes . . . 

• cut DNA at precise locations
• help bacteria to pick up DNA
• move DNA through a gel
• copy DNA

Collection of DNA fragments that can be used to identify genetically unique individuals

• Amplify

• DNA Ladder

• DNA Fingerprint

• DNA Analysis

Bob was found dead in his home.  Crime scene analysis showed signs of a struggle.  Blood was collected from the crime scene, the victim, and three suspects.  Which suspect likely committed the crime? 

• Sue
• Lisa
• John
• None of these

Which suspect is likely guilty?

• Suspect #1
• Suspect #2
• Suspect #3

Which suspect’s DNA matches the felon’s DNA left at the crime scene?

• Suspect 1
• Suspect 2
• Suspect 3

DNA fingerprinting works because

• Most genes are dominant
• All organisms contain RNA
• The most important genes are different among most people
• No two people, except identical twins, have exactly the same DNA