Sarah has type A blood, and Jesse has type O blood. Their son has type B blood. Can Jesse be the baby daddy? He is a bit worried.
Please complete the Punnett squares to determine the possibilities.
a
No, type B blood must be homozygous
b
Yes, if one parent is heterozygous
c
Yes, if both parents are heterozygous
d
No, this is impossible
b
Yes, if one parent is heterozygous
Punnett square:
| | A | A |
|---|---|---|
| O | AO | AO |
| O | BO | BO |
50% chance of the child having type B blood, so Jesse could potentially be the father.