Question 2
Four individuals carried out blood group tests using Anti A and Anti B serum. The results of the four are shown in the picture below.

a) Identify the blood types of the four individuals above. [2 points]
| Individual | W | X | Y | Z |
| --- | --- | --- | --- | --- |
| Blood type | | | | |
b) If individuals Y and X are husband and wife, then what blood types might their children have? Explain your answer using Punnett square. [2 points]

c) The pedigree below shows the family tree of individuals W and Z. [2 points]

State blood type of:
i) Individual 1
ii) Individual 2

a) Identify the blood types of the four individuals above. [2 points]
| Individual | W | X | Y | Z |
| --- | --- | --- | --- | --- |
| Blood type | | | | |
b) If individuals Y and X are husband and wife, then what blood types might their children have? Explain your answer using Punnett square. [2 points]

c) The pedigree below shows the family tree of individuals W and Z. [2 points]

State blood type of:
i) Individual 1
ii) Individual 2