Unit 10 Blood: Notes Check

​I^A​I^B

i​ i

​I^B​I^B or ​ I^B i​

​Fill in the blood type genotypes

​
​I^AI^A or ​ I^A i​

​Presumptive

No color change.​
Negative Result = Not Blood

Bright Pink
Positive Result = Blood

​Precipitin

​Only way to individualize blood is through DNA analysis

​Blood is CLASS evidence - applies to a group

Type A-

Type O+

​Can rule people out. For example, if blood type of suspect is A+ and crime scene blood is O+, then that suspect can be ruled out.

Categorize

Options (9)

Only way to individualize blood evidence

Testing for the presence of blood

Is it animal blood or human?

Linking blood evidence to a particular person

First step if red stain is found at a crime scene

Probable second step if blood found at a crime scene

Gel Electrophoresis Results

Organize these options into the right categories

Presumptive (3)

Precipitin (2)

DNA Typing (3)

Multiple Choice

What is the name of the presumptive blood test used in the blood lab?

• Kastle Meyer

• Precipitin

• Gel electrophoresis

Multiple Choice

What type of evidence is blood evidence?

• Class

• Individual

• Direct

• Appearance - what does it look like?

• Distribution - how much blood is there?

• Location - where is it?

Passive

Transfer

Projected

Hotspot

Which pictures are examples of the blood type pattern: PASSIVE

Hotspot

Which pictures are examples of the blood type pattern: TRANSFER

Hotspot

Which pictures are examples of the blood type pattern: PROJECTED

Multiple Choice

What are the THREE important factors when examining blood spatter?

• Appearance

  Distribution

  Location

• Abundance

  Direction

  Formation

• Surface

  Size

  Scale

• Quality

  Quantity

  Placement

Multiple Choice

The knife pictured is held by a person standing up at a 90 angle. What would the passive blood spatter look like from a 90 angle?

​There is an antiserum for each antigen/antibody

​**Rh = D antigen = + or -

​Agglutination indicates the blood type

​Agglutination!

​Use this page to answer the next 3 questions.

Multiple Choice

What is the blood type of patient 1?

• A +

• A -

• B +

• B -

Multiple Choice

What is the blood type of patient 2?

• AB +

• AB -

• O +

• O -

Multiple Choice

What is the blood type of patient 3?

• AB +

• AB -

• O +

• O -

​The next slides will be a review over the quiz material

Multiple Choice

What term describes the clumping of red blood cells?

• agglutination

• antigens

• eosinophil

• lymphocyte

Multiple Choice

What does blood consist of?

• plasma, red blood cells, white blood cells, platelets
• hormones, oxygen, nutrients, water
• red blood cells
• carbon dioxide and minerals

Multiple Choice

The proteins found on the surface of RBCs that allow us to type blood as A, B, O or AB are called

• antigens

• antibodies

• aggluntates

• Rh factors

Multiple Choice

What protein is part of the immune system that exists in the plasma of blood and will react with the incompatible antigen?

• agglutinates

• clotting factors

• phagocytes

• antibodies

Multiple Choice

A person has the I^B i alleles. What is the phenotype?

• Blood type B

• Blood type BO

• Blood type O

• all of the answers are correct

Multiple Choice

What type of antigens can be found on the surface of RBC's when someone has blood type O?

• A

• B

• AB

• none

Multiple Choice

What is NOT a possible genotype for someone with type B blood?

• I^BI^B
• I^AI^B
• I^B i

Multiple Choice

Help clot blood

• Erythrocytes

• Leukocytes

• Platelets

• Lymphocytes

Multiple Choice

This is the colorless liquid in which the components of blood are suspended...

• red blood cells

• platelets

• plasma

• white blood cells

Multiple Choice

Which of the following is homozygous recessive?

• IᴬIᴮ

• ii

• IᴬIᴬ

• IᴮIᴮ

Multiple Choice

An individual who is type O blood has:

• Neither A nor B antibodies

• A antibodies

• B antibodies

• Both A and B antibodies

Multiple Choice

Which of the following shows codominant alleles?

• IᴬIᴮ

• Iᴬi

• IᴬIᴬ

• ii

Multiple Choice

What type of blood antibodies should a person with Type O blood have?

• Both anti-A and anti-B

• Neither anti-A nor anti-B

• Anti-A only

• Anti-B only