Download ABO Blood Types

ABO Blood
Types
The most well-known and medically
important blood types are in the ABO
group. They were discovered in 1900
and 1901 at the University of Vienna
by Karl Landsteiner in the process of
trying to learn why blood transfusions
sometimes cause death and at other
times save a patient. In 1930, he
belatedly received the Nobel Prize for
his discovery of blood types.
All humans and many other
primates can be typed for the ABO
blood group. There are four
principal types: A, B, AB, and
O. There are two antigens and two
antibodies that are mostly
responsible for the ABO types.
Blood Types
Multiple Alleles – more
than the usual two
alleles for a trait
Codominance – Both
alleles will be present
A = dominant to O
B = dominant to O
O = recessive
AB = codominant
Genotypes
A = AA, AO
B = BB, BO
AB = AB
O = OO
The specific
combination of these
four components
determines an
individual's type in
most cases.
The table below
shows the antigens
and antibodies with
the corresponding
ABO type
"THE RAREST BLOOD TYPE IS THE TYPE THAT'S NOT AVAILABLE WHEN YOU NEED IT!"
Blood Type & Rh
How Many Have It
Frequency
O
Rh Positive
1 person in 3
37.4%
O
Rh Negative
1 person in 15
6.6%
A
Rh Positive
1 person in 3
35.7%
A
Rh Negative
1 person in 16
6.3%
B
Rh Positive
1 person in 12
8.5%
B
Rh Negative
1 person in 67
1.5%
AB
Rh Positive
1 person in 29
3.4%
AB
Rh Negative
1 person in 167
.6%
Universal Donor = O
Universal Acceptor = AB
Mrs. Smith and Mrs. Jones shared
a room in the maternity ward.
Mrs. Smith is certain the baby she
brought home is not hers. Can you
help her????
Mrs. Smith = AB
Mr. Smith = O
Baby at Smiths = O
Mrs. Jones = A
Mr. Jones = A
Baby at Jones = A