Blood and Blood Types

By Polar and Sloth

Blood and Blood Types

Here are some important facts we learned from reading this PowerPoint ( Presentation #1: Blood Basics (PPT)  from the Science  Spot Forensic Pages

Your blood type is determined by your mother and father because you inherit on gene from each parent.  To understand how these genes determine your blood typed watch the videos below:

Blood types  Khan Academy Created by Patrick van Nieuwenhuizen.

Blood Types


Below are the blood types:
OO = Blood type O
AO = Blood type A
BO = Blood type B
AB = Blood type AB
AA = Blood type A
BB = Blood type B

What blood type are you? You may have a rare blood type. Ask your parents.


Image result for blood molecules


  • If you are O positive you are 1 in 3 people. That is about 38.4%. If you are O negative you are 1 in 15 people. That is about 7.7%.
  • If you are A positive you are 1 in 3 people.  That is about 32.3%. If you are A negative you are 1 in 16 people. That is about 6.5%.
  • If you are B positive you are 1 in 12 people. That is about 9.4%. If you are B negative you are 1 in 67 people. 1.7%.
  • If you are AB positive you are 1 in 29 people. That is about 3.2%. If you are AB negative you are 167 people. That is about 0.7%.

RED BLOOD CELLS (Erythrocytes) –  Are the most abundant cells in our
blood!  Did you know that they are produced in bone marrow and also even contain a protein!
 That is called hemoglobin that carries oxygen to our cells.
WHITE BLOOD CELLS (Leukocytes) – Are systems that destroy an infectious agents called pathogens.
PLASMA – Prepare to be amazed by Plasma! This is the yellowish liquid portion of blood. This contains electrolytes, nutrients and vitamins! And also hormones, clotting factors, and even proteins such as antibodies to fight infection.
PLATELETS (Thrombocytes) – The clotting factors that are carried in
the plasma; they clot together in a process called coagulation to seal a
wound and prevent a loss of bloodRelated image

Blood samples – Did you know? That blood samples can be analyzed to determine what  blood type you are and your DNA. Fun fact this also can be used to match blood to possible suspects.

Blood droplets –  Bet you didn’t know that blood can be analyzed to give clues to the location of a crime or even movement of a victim, and even the type of weapon!

Blood spatter – Fun fact blood can even be analyzed to determine patterns that give investigators clues, even how a crime might have happened. Interesting right?

 INTERESTING FACT: The average adult has five liters of
blood inside of their entire body, which makes
up about 7-8% of their body weight! 

That concludes the basic blood and blood types part of this web page.