Gel Electrophoresis

In preparation for an electrophoresis procedure, enzymes are added to DNA in order to

• convert the DNA into gel

• cut the DNA into fragments

• change the color of the DNA

• produce longer sections of DNA

DNA fingerprinting works because

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

This laboratory procedure is known as

• CLONING

• gel electrophoresis

• chromatography

• use of a dichotomous key

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.

Which male is the father of the child?

• Male 1

• Male 2

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

• Jack
• Daniel
• Bill

In gel electrophoresis, the largest DNA fragment will appear

• closest to the starting wells
• farthest from the starting wells
• three quarters away from the starting wells
• it depends on how many fragments there are

Once DNA has been extracted from the nucleus of a cell, it is exposed to ______ ______ that act like biochemical scissors to cut the DNA.

• restriction enzymes

• gel agarose

• clotting factors

• electric shock

Tags

NGSS.MS-LS4-5

In this DNA fingerprint, the _______ pieces travel the farthest. (blue)

• shortest

• longest

A method of separating molecules, such as DNA, according to their size and electrical charge.

• STR Analysis

• DNA Fingerprint

• DNA Probe

• Gel Electrophoresis