Forensic Science DNA

Which is true regarding DNA collection?

• DNA is only collected from suspects in murders and rapes.

• DNA must be collected in a plastic bag to prevent

• DNA evidence is destroyed after 5 years to reduce storage problems.

• DNA evidence found in trace amounts can be used to solve crimes.

Where within the DNA molecule is the genetic code?

• Order of the bases

• Sugar-phosphate groups

• Introns

• STR's

What is electrophoresis?

• A method of separating molecules according to their size and electrical charge.

• A cell structure containing genetic information along DNA

• RNA molecule

• A molecule labeled as radioactive.

All of the following are base pairs except:

• A

• C

• G

• E

Who discovered the double helix DNA?

• Simon and Garfunkel

• Watson and Crick

• Salt and Pepper

• Locard and Bertillon

During our DNA extraction lab, why did we use warm water?

• To heat up the Wheat

• To breakdown the Phospholipid layer (Fat Layer)

• To make the wheat grow

• To clean the wheat

Why did the DNA evidence from O.J. Simpson case not matter?

• It wasn't his DNA

• The defense said it was contaminated

• There was no blood evidence

How would you collect dried blood (to preserve the DNA) from a crime scene?

• A Swab

• Use a scraper

• Put it in a plastic bag

Which of the following are sources of DNA?

• Semen

• Sweat

• Saliva

• All of the above

When biological materials are found at the crime scene, the first thing you want to do is

• Photograph

• Keep sample from contamination

• Collect biological material

• Touch the sample