Gel Electrophoresis and DNA

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

• STR Analysis

• DNA Fingerprint

• DNA Probe

• Gel Electrophoresis

What does the CoDIS database contain?

• Mugshots
• DNA profiles
• Top-secret government information
• Facebook login information

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

• Bob
• Sue
• John
• Lisa

Cytosine pairs with

• thymine

• guanine

• cytosine

• adenine

Which is the primary purpose of using restriction enzymes in gel electrophoresis?

• It allows the strands of DNA to be cut into various lengths for testing
• It restricts the number of base pairs that can be tested in a sample
• It makes the testing simpler by moving the strands into the gel faster
• It charges the DNA strands

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

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

This laboratory procedure is known as

• CLONING

• gel electrophoresis

• chromatography

• use of a dichotomous key

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 

DNA is recovered from a suspected dead soldier.  Which Parents are the likely parents of the soldier?

• Parents C and D
• Parents E and F
• Parents A and B
• Parents G and H