Blood Review
1.
The scientists who study blood and bodily fluids are ___________________________.
2.
Another name for a blood clot is a _____________________________.
3.
The first thing that forensic scientists need to determine about a stain found at a crime scene: is it ____________________?
4.
More people are Rh negative than Rh positive. True or False?
5.
Which types of blood cells contain DNA?
6.
One presumptive test called the Kastle-Meyer Test uses __________________________ to determine if a spot is blood.
7.
The most commonly used presumptive blood test is ____________. A positive reaction is a ___________ color.
8.
Karl Landsteiner described the ABO blood types in ____________, and discovered the
Rh factor in ________________.
9.
In 1894, _________________________ wrote the earliest reference to blood spatter.
10.
In 1939, _________________________ was the first researcher to analyze the meaning of blood spatter pattern.
11.
In 1971, ___________________________ used blood spatter analysis as a tool in forensic examination.
12.
_______________________ uses hemoglobin as a catalyst in a reaction to glow in the presence of blood.
13.
________________________ reacts with blood and will glow under a certain wavelength of fluorescent light.
14.
To determine point of origin, blood spatter analysts look at the area of
______________________.
15.
Blood type is considered __________________ evidence, DNA is considered
____________________________ evidence.
16.
A blood drop formed from the force of gravity is called
_____________________________.
17.
A spike on the parent blood drop is called a _______________.
18.
A small drop that has separated from the parent drop is called a
_____________________.
19.
Which is the rarest blood type? ___________ Which is the most common?
_______________
20.
Which blood types are most common to each ethnic group? a.
Native American _________________ b.
Japanese or Chinese_______________ c.
European Caucasian_______________ d.
African American or Thai _____________
21.
The shape, not the size of the blood drop is considered when determining the angle of impact? True or False?

22.
A blood drop impacting a surface at a 90 degree angle has a __________________ shape.
23.
The _____________________ of a blood spatter shows the direction of travel.
24.
Name the four components of blood:
25.
Red blood cells, also called _____________________________, are responsible for carrying __________________ to the cells.
26.
______________________________ or __________________ blood cells, are responsible for cleaning the system of pathogens.
27.
______________________________ or _____________________ are responsible for clotting.
28.
Certain antigens (proteins) on the red blood cells determine one’s ________________
_______________.
29.
A blood ___________________ indicates that a victim was stationary for a period of time.
30.
A blood ___________________ indicates that a victim was moving after their injury was incurred.
31.
A ____________________ of blood is secondary transfer of blood from an object to another area.
32.
______________________ ___________________ are typically found on walls or ceilings and are caused by the pumping of the heart.
33.
_________________________ are shaped like exclamation points and can be used to pinpoint the location of a victim at the time of an attack.
34.
High velocity spatter is almost always caused by a __________________________.
35.
Medium velocity spatter is caused by an attack such as a ____________________ or a
_____________________.
36.
Low velocity spatter is usually caused by a _______________ ________________ attack.
37.
_____________________________ spatter is very tiny, hard to see drops.
38.
A species origin test is when an antiserum is added to a blood sample to see if it reacts.
If blood reacts to human antiserum, it will form a ring precipitate. This means the sample is/is not human.
39.
Electrophoresis is the procedure used to analyze __________ samples.
40.
Know how to calculate angle of impact and area of convergence.
41.
Know how to use a Punnet square to determine paternity and predict the blood type of offspring.
42.
Know the difference between genotype and phenotype
43.
What blood evidence was used to convict, and then exonerate Dr. Sam Sheppard. Hint – it was NOT DNA. What do you think actually happened in this case? Was he guilty or innocent?