Gel Electrophoresis

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 

What is the purpose of gel electrophoresis?

• helps cut DNA
• count the genes in DNA
• separates DNA based on size
• allows for an exact replicated organism

Which two bear species are most closely related?

•  Bear 1 and Bear 2

• Bear 1 and Bear 3

• Bear 2 and Bear 3

• There’s no way to tell

This laboratory procedure is known as

• Gene cloning

• gel electrophoresis

• chromatography

• cDNA synthesis

Based on these results whose blood was found in the blood stain at the crime scene?

• Bob
• Sue
• John
• Lisa

Which man is the father of this baby?

• Father 1
• Father 2
• Father 3
• None of them

Which suspect is likely guilty?

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

The parents of a new baby believe they brought the wrong child home from the hospital. Gel electrophoresis was performed using DNA samples from the parents and the child. A section of the gel

electrophoresis results is shown below. Which conclusion is valid based on the gel electrophoresis results?

• They have the correct child, because her genetic information is identical to that of the father.

  
  

• They have the wrong child, because her genetic information does not match that of either parent.

• They have the correct child, because her genetic information came from both parents.

  
  

• They have the wrong child, because her genetic information matches only that of the mother.

Shannon does not know who her father is.  There are three possibilities:  Jack, Daniel and Bill.  Who is the father?

• Jack
• Daniel
• Bill

What kind of information does DNA carry?

• genetic
• nuclear
• cell structure
• it doesn't carry any info