The document discusses blood types and inheritance patterns. It notes that the ABO blood group has 3 alleles - A, B, and O. People have 2 alleles that determine their blood type. Type A has the A allele, Type B the B allele, Type AB both A and B alleles, and Type O has 2 O alleles. The document provides examples of determining blood types of children from parental blood types using Punnett squares. It also includes a blood type compatibility chart for transfusions.

1. BLOOD TYPES
An Example of Inheritance
with Multiple Alleles
Module 10 – Genetics
Essential Standard Bio.3.2.2

2. BLOOD TYPES
 The ABO blood group is an example of a
single gene that has multiple alleles in humans.
 Multiple Alleles = more than 2 forms of the
gene.
 There are 3 possible alleles for this gene:
 A, B, and o.
 Remember that each person only has 2 alleles.
 A and B are codominant, and o is recessive.

3. BLOOD TYPES
 A and B are 2 different molecules found
on the outside of red blood cells.
http://learn.genetics.utah.edu/content/begin/traits/blood/

4. BLOOD TYPE CHART
Blood Type Surface Alleles
(Phenotype) Molecules (Genotype)
Type A
Type B
Type AB
Type O

5. BLOOD TYPE CHART
Blood Type Surface Alleles
(Phenotype) Molecules (Genotype)
Type A A
Type B
Type AB
Type O

6. BLOOD TYPE CHART
Blood Type Surface Alleles
(Phenotype) Molecules (Genotype)
Type A A
Type B B
Type AB
Type O

7. BLOOD TYPE CHART
Blood Type Surface Alleles
(Phenotype) Molecules (Genotype)
Type A A
Type B B
Type AB A and B
Type O

8. BLOOD TYPE CHART
Blood Type Surface Alleles
(Phenotype) Molecules (Genotype)
Type A A
Type B B
Type AB A and B
Type O None

9. BLOOD TYPE CHART
Blood Type Surface Alleles
(Phenotype) Molecules (Genotype)
Type A A AA or Ao
Type B B
Type AB A and B
Type O None

10. BLOOD TYPE CHART
Blood Type Surface Alleles
(Phenotype) Molecules (Genotype)
Type A A AA or Ao
Type B B BB or Bo
Type AB A and B
Type O None

11. BLOOD TYPE CHART
Blood Type Surface Alleles
(Phenotype) Molecules (Genotype)
Type A A AA or Ao
Type B B BB or Bo
Type AB A and B AB
Type O None

12. BLOOD TYPE CHART
Blood Type Surface Alleles
(Phenotype) Molecules (Genotype)
Type A A AA or Ao
Type B B BB or Bo
Type AB A and B AB
Type O None oo

13. BLOOD TYPES
Doctors need to determine blood type
before a person can get a blood
transfusion because the red blood
cells of incompatible blood types
could clump together, causing death.

14. BLOOD COMPATIBILITY CHART
Blood Type (Phenotype)
Type A
Type B
Type AB
Type O

15. BLOOD COMPATIBILITY CHART
Compatible Blood
Blood Type (Phenotype)
Types for Transfusions
Type A
Type B
Type AB
Type O

16. BLOOD COMPATIBILITY CHART
Compatible Blood
Blood Type (Phenotype)
Types for Transfusions
Type A Type A or Type O
Type B
Type AB
Type O

17. BLOOD COMPATIBILITY CHART
Compatible Blood
Blood Type (Phenotype)
Types for Transfusions
Type A Type A or Type O
Type B Type B or Type O
Type AB
Type O

18. BLOOD COMPATIBILITY CHART
Compatible Blood
Blood Type (Phenotype)
Types for Transfusions
Type A Type A or Type O
Type B Type B or Type O
Type AB, Type A, Type B,
Type AB or Type O
(Universal Recipient)
Type O

19. BLOOD COMPATIBILITY CHART
Compatible Blood
Blood Type (Phenotype)
Types for Transfusions
Type A Type A or Type O
Type B Type B or Type O
Type AB, Type A, Type B,
Type AB or Type O
(Universal Recipient)
Type O
Type O
(Universal Donor)

20. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?

21. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
A
Dad
B

22. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
Mom
B ?
A
Dad
B

23. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
Mom
B ?
A A
Dad
B

24. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
Mom
B ?
A AB
Dad
B

25. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
Mom
B ?
A AB
Dad
B B

26. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
Mom
B ?
A AB
Dad
B BB

27. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
Mom
B ?
A AB A
Dad
B BB

28. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
Mom
B ?
A AB A?
Dad
B BB

29. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
Mom
B ?
A AB A?
Dad
B BB B

30. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
Mom
B ?
A AB A?
Dad
B BB B?

31. EXAMPLE PROBLEM #1
 Mom has blood type B and Dad has blood type AB.
What is the chance their child will have blood type
B?
Mom
B ?
A AB A?
½ chance of
Dad type B
B BB B?

32. EXAMPLE PROBLEM #2
 Mom has blood type A and her child has blood type
B. Could the father have blood type O?

33. EXAMPLE PROBLEM #2
 Mom has blood type A and her child has blood type
B. Could the father have blood type O?
The answer is NO.
The child had to have inherited the B
allele from their real father;
the type O man just has oo so he could
not be the father.

34. EXAMPLE PROBLEM #2
 Mom has blood type A and her child has blood type
B. Could the father have blood type O?
The answer is NO.
The child had to have inherited the B
allele from their real father;
the type O man just has oo so he could
not be the father.
This example comes from a true case
in the 1940s involving the film star
Charlie Chaplin.
http://www.cosmomovieawards.com/actors/charlie_chaplin.html