Chapter 3 Physical Evidence

Chapter 3 Physical EvidenceSamples of DNA

Pieces of physical evidence

Individual vs class evidence

Handwriting analysis

Specific cases

100 100 100 100 100

200 200 200 200 200

300 300 300 300 300

400 400 400 400 400

500 500 500 500 500

Sources of DNA 100

• List the source of DNA for each of the following– Blood– Saliva– Semen

Sources of DNA 200

• Name and identify the layer that contains DNA

A

B

C

Sources of DNA 300

• Name and give the function of each part of the human blood

Sources of DNA 400

• This part of the human blood actually carries the oxygen

Sources of DNA 500

• Identify and give the function of each part

C

D

E

A

B

Pieces of Physical evidence 100

• What is the only source of error in physical evidence?

Pieces of physical evidence 200

• Explain the difference between a solute and a solvent

Pieces of physical evidence 300

• This piece of physical evidence is defined as the firearm discharge left on a victim and /or shooter

Pieces of physical evidence 400

• This piece of physical evidence is natural or synthetic and is often transferred during a crime

Pieces of evidence 500

• What type of substances are retrieved from arson crime scenes?

Individual vs class 100

• This type of evidence is linked to an entire group

Individual vs class 200

• A ripped t-shirt with a purple paint stain is considered what type of evidence?

Individual vs class evidence 300

• This scientist is responsible for determining that fingerprints are individual pieces of evidence

Individual vs class evidence 400

• Explain the purpose of the product rule

Individual vs class evidence 500

• Complete the table with the proper percentages and explain when this specific example was used

Blood Factors Frequency • A• EsD • PGM 2+2- 2%

Handwriting analysis 100

• All of the following are used to analyze letters in a questioned document EXCEPT:– Proportionalsize– Curves– Slants– Connection of lines between letters– Paper quality

Handwriting analysis 200

• What are the three characteristics analyzed by line form?

• Pressure• Smooth and darkness• speed

Handwriting analysis 300

• Explain the difference between an exemplar and a questioned document.

• Identify each in the sample below

Sample 1 Sample 2

Handwriting analysis 400

• Based on this handwriting sample, is this person lying? Explain how you know.

Handwriting analysis 500

• List the 3 categories of people involved in crime scene reconstruction.

Specific cases 100

• A yellow-green carpet fiber convicted this man of murder

Specific cases 200

• Wayne Williams was convicted of?

Specific cases 300

• This man was convicted solely on the testimonial evidence given by Joseph Foy 15 years later

Specific cases 400

• In the 2 minute mystery Phony crash, list 3 pieces of physical evidence that could have proven the victim intentionally crashed his car off the cliff

Specific cases 500

• Explain the difference between corroboration and identification