Blood Evidence Review

Blood pattern analysis is a technique that seeks to piece together the events that caused bleeding.

• True

• False

Which of the following BEST describes the relationship between free falling blood and the spatter it creates?

• The height from which blood falls is inversely proportional to the diameter of the blood stain. As the height increases, the diameter of the blood stain decreases.

• The height from which blood falls is directly proportional to the diameter of the blood stain. As the height increases, the diameter of the blood stain increases.

• The height from which blood falls is the same as the diameter of the blood stain.

• There is no relationship between height and diameter.

Was the blood shown dropped from a 90° angle?

• yes

• no

The passive drops originated from 1 ft., 2 ft, and 3 ft. Which one of the drops most likely fell from 1 ft?

• A

• B

• C

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

NGSS.MS-PS3-2

If a person has type B- blood, then they have _____

• only B antigens on their red blood cells

• both A antigens and the Rh protein on their red blood cells

• only A antigens on their red blood cells

Which of the following is NOT true concerning blood typing?

• Blood typing is faster and less expensive than DNA testing.

• Blood typing is a source of individual evidence.

• Blood typing can eliminate suspects.

• Blood typing can be used in forensics as well as in determining parentage.

How can this blood spatter be classified?

• forward spatter from a gunshot wound

• drip trail pattern from a bloody weapon

• passive drop from body being carried from primary scene

• cast-off spatter from blood being slung from a weapon

What is the arrow pointing to?

• Spine

• Spike

• Satellite

• Space

Which of the following CANNOT be determined by observing blood spatter?

• the DNA of the victim

• the position of the assailant at the time of the spatter

• the direction that the blood was traveling

• the angle of impact

The higher the energy of impact, the smaller the blood droplets that are produced.

• True

• False