1. Blood Type Punnett Square

2. What why does blood have a type?
Type A blood cells are covered with A agglutinogens (a type of antigen), type B have B agglutinogens, type AB have both A and B, and type O blood have none.
What why does blood have a type?

3. Blood types Blood types in humans
Phenotype
Genotype A
AA or AO B
BB or BO AB
AB only O
OO only
Blood types
Blood types in humans
There are 4 common ones
A, B, O, and AB
Blood types are produced by 3 different Alleles:
A, B, and O

4. Genotype for blood type
I and i are used in genotype
I used with A and B
i used with O
A and B are dominant over O: A and B share dominance
Ex: Genotype: AA is IAIA

5. PHENOTYPE
GENOTYPE A
IAIA
IAi B
IBIB
IBi AB
IAIB O ii
Blood type chart

6. Draw a Punnett square showing all the possible genotypes for the offspring produced by a type “O” mother and an a Type “AB” father. IA IB i
IA i
IB i IA IB i
Blood types
Fraction and percentage A
2/4 50% B AB
0/4 0% O
Blood type practice

7. If the problem does not specify heterozygous
If the problem does not specify heterozygous. Then consider it to be Homozygous IAIA or IBIB
Cross a female with blood type A and a male with heterozygous B blood type.
A male with blood type B has a child with a woman who has blood type A. The child is blood type O. What is the genotype of the male and female? Show your work.
Complete on your own