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Gel Electrophoresis and DNA

Total questions: 16

Worksheet time: 19mins

Name
Class
Date
1.

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

a)

Bob

b)

Sue

c)

John

d)

Lisa

2.

Which two bear species are most closely related?

a)

Bear 1 and Bear 2

b)

Bear 1 and Bear 3

c)

Bear 2 and Bear 3

d)

There’s no way to tell

3.

Which suspect is likely guilty?

a)

Suspect #1

b)

Suspect #2

c)

Suspect #3

4.
DNA fingerprinting works because
a)
Most genes are dominant
b)
All organisms contain RNA
c)
The most important genes are different among most people
d)
No two people, except identical twins, have exactly the same DNA 
5.

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

a)

Parents C and D

b)

Parents E and F

c)

Parents A and B

d)

Parents G and H

6.
What is the purpose of gel electrophoresis?
a)
helps cut DNA
b)
count the genes in DNA
c)
separates DNA based on size
d)
allows for an exact replicated organism
7.
Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?
a)
DNA is negatively charged so attracted to the positive end of the unit
b)
DNA is positively charged to attracted to the negative end of the unit
c)
the agarose gel in negatively charged
d)
the agarose gel is positively charged
8.

In gel electrophoresis, the largest DNA fragment will appear

a)

closest to the starting wells

b)

farthest from the starting wells

c)

three quarters away from the starting wells

d)

it depends on how many fragments there are

9.
Which is the primary purpose of using restriction enzymes in gel electrophoresis?
a)
It allows the strands of DNA to be cut into various lengths for testing
b)
It restricts the number of base pairs that can be tested in a sample
c)
It makes the testing simpler by moving the strands into the gel faster
d)
It charges the DNA strands
10.

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?

a)

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


b)

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

c)

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


d)

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

11.

Which suspect left the blood stain?

a)

Bob

b)

Sue

c)

John

d)

Lisa

12.

Which male is the father of the child?

a)

Male 1

b)

Male 2

13.

What is the function of the gel in Gel Electrophoresis?

a)

extract DNA from the liquid

b)

filter the DNA as it moves through the system

c)

buffer the DNA so it keeps moving

d)

charge the DNA so it will move to the opposite side of the system

14.
Which DNA fragment bands move faster and farther in a gel electrophoresis? 
a)
there is no way to tell 
b)
the largest ones
c)
the smallest ones
d)
none of these
15.

Which suspect is linked to the crime scene by this DNA analysis

a)

Suspect A

b)

Suspect C

c)

Suspect D

d)

Suspect B

16.
Shannon does not know who her father is.  There are three possibilities:  Jack, Daniel and Bill.  Who is the father?
a)
Jack
b)
Daniel
c)
Bill