(Dna & Blood Evidence) Test Review printable pdf download

Name: ________________________________________

Period: _____

Date: ________

Unit 7 (DNA & Blood Evidence) Test Review

Use your class assignments, labs, and notes to answer the following.

Part 1: DNA

1. How can we use DNA to identify suspects if the majority of our DNA doesn’t differ from person to

person? _______________________________________________________________________

_______________________________________________________________________________

2. Why do they use length polymorphisms for DNA testing? ____________________________________

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3. Why is it important to use multiple loci to determine DNA fingerprinting? _______________________

_______________________________________________________________________________

4. When do scientists use gel electrophoresis? _______________________________________________

_______________________________________________________________________________

5. How do we make DNA move through the gel? _____________________________________________

6. What happens to short and long strands as they move through the gel? ________________________

_______________________________________________________________________________

7. What do you see in the gel instead of individual DNA strands? ________________________________

_______________________________________________________________________________

8. Where is DNA found at a crime scene? (Give 5 sources) ____________________________________

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9. When was DNA first used in the courtroom? ___________

10. Can identical twins be differentiated by DNA analysis? ______ Why or why not? ________________

_______________________________________________________________________________

11. Is DNA evidence enough to convict a person? ______

12. What are the four factors that determine the success of DNA evidence?

a. ____________________________________________________________________________

b. ____________________________________________________________________________

c. ____________________________________________________________________________

d. ____________________________________________________________________________

(Dna & Blood Evidence) Test Review