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DNA Test Practice

Last updated over 3 years ago

4 questions

1

1

The steps of gel electrophoresis are below. They are not in the correct order. 

Load the DNA into the wells of the gel. Include a DNA control for comparison.
Watch as the smaller DNA fragments move toward the positive end of the gel.
Cut DNA into fragments with restriction enzymes
Connect the gel chamber to an electrical current.
Stain the DNA bands to make them easily visible.

1

1

Question 1

1.

DNA Evidence is considered what type of evidence?

Class

Physical

Individual

Circumstantial

Question 2

2.

Which of the following is true about gel electrophoresis?

Smaller DNA fragments move faster and farther than larger DNA fragments

Larger DNA fragments move faster and farther than smaller DNA fragments

All DNA fragments move at the same rate despite their size

Question 3

3.

Using the steps above, what is the correct order of the steps for creating a DNA fingerprint?

1, 2, 4, 5, 3

3, 1, 4, 2, 5

5, 3, 4, 2, 1

4, 5, 2, 3, 1

Question 4

4.

Why is a victim's DNA included in a DNA fingerprint?

To know if the DNA (possibly from blood) is from the victim

To determine if the victim actually died or was injured

To exclude the victim as a suspect

It doesn't need to be included