Name ______________________
Date_____ / _____ / _________
BLOOD TYPES AND BLOOD TRANSFUSIONS
Provide the missing information in the table below.
Blood
Type
A
B
AB
O
Antigens on
Red Cells
Antibodies
in Plasma
May Donate To
May Receive
From
1. Why are individuals with blood type O called "universal donors"?
.
2. Why are individuals with blood type AB called "universal recipients"?
3. Why do many people who plan to undergo surgery in the near future donate their own
blood in advance in case they need to use it during surgery?
_______________________________________________________________________________________
The frequencies of blood types vary in populations around the world. For example, the
frequencies of the A, B, AB, and O blood types differ in three US populations as shown below.
POPULATION
A
B
AB
O
U.S Whites
39.7% 10.6%
3.4%
46.3%
U.S. Black
26.5% 20.1%
4.3%
49.1%
Native Americans 30.6%
0.2%
0.00% 69.1%
Answer the questions below using the data in the table above.
1.
2.
3.
4.
5.
In the U.S. as a whole, which blood type is the most common? _____________
What are the chances that the blood of a U.S. Black is not type O? ____________
Which population has very few type B alleles? ____________________
Which is more common, universal donors or universal recipients? ___________
How do the frequencies of type B blood alleles compare in white and black
Americans ? _____________________________________________________
©www.EasyTeacherWorksheets.com