Gel Electrophoresis and DNA Fingerprint

The technique by which DNA fragments are placed in a gel and charged with electricity is referred to as?

• DNA profiling 

• DNA electrophoresis 

• DNA typing 

• DNA Fragmenting 

The adjoining figure shows apparatus set-up of which analysis technique?

• Gel electrophoresis

• Polymerase chain reaction

• Paper chromatography

• Soil analysis using pH indicators

What lab technique separates DNA molecules by size in order to analyze DNA?

• Gel Electrophoresis

• Fingerprinting

• Cloning

• DNA Extraction

Gel electrophoresis separates fragments of DNA by:

• Size/weight

• Genes

• Base pairs

• Electromagnetic charge

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.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the purpose of gel electrophoresis in molecular biology?

• To increase the size of DNA fragments

• To separate DNA fragments based on their size

• To create DNA fragments

• To visualize proteins only

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

Label the the bands correctly.

d

e

f

c

b

a

B2

G

J

D

M

B1

Tags

NGSS.HS-LS3-1

Imagine that you have a sample of DNA that contains a single, specific DNA sequence. Before you run your gel, you split your sample into two tubes. You run the DNA from the first tube and use an enzyme called a restriction enzyme that cuts the DNA into two pieces at a specific point in the sequence. You then run this sample that was cut on the gel. Which if the next three lanes could be the same sample from lane two after it was cut into two pieces?

• 3

• 4

• 5