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What are the 4 human blood types?
A, B, AB, and O
This is an example of multiple alleles.
What are the alleles for the human blood
types?
A, B, O
These 3 alleles can be combined to make 4
blood types.
What makes the 4 blood types different?
The antigen (protein) on the surface of the
Red Blood Cell.
Blood Type
antigen
A
A
B
B
AB
A and B
O
neither
Human blood type is also and example of
a codominant trait.
alleles A and B are both dominant,
allele O is recessive.
Transfusion Rule – never give a person a
new blood protein
Type
A
B
AB
O
can be given to:
A or AB
B or AB
AB
A, B, AB, O
What was Dr.Drew’s most
important
accomplishment?
What was the irony of his
death?
Inheritance of human blood types:
These problems have the same 4 parts:
P1 statement
Punnett square
genotype
phenotype