LaToya has type A blood, and Gerald has type B blood. Their daughter has type O blood. Can Gerald be the baby daddy? He is a bit worried. Please complete the Punnett square(s) to determine the possibilities. a Yes, if one parent is heterozygous b No, type B blood must be homozygous c No, this is impossible d Yes, if both parents are heterozygous
d Yes, if both parents are heterozygous.
The Punnett square for the blood type inheritance would look like this:
| IA | i
-----------------------
IB | AIB | iB
i | Ai | ii
LaToya has type A blood, which means she has genotype IAi. Gerald has type B blood, which means he has genotype IBi.
By crossing IAi with IBi, there are four possible combinations: IAIB, IAi, IBi, and ii.
If the daughter has type O blood (ii), that means both parents must have passed on the i allele. Thus, the daughter's genotype is ii.
So, the Punnett square shows that it is possible for Gerald to be the baby daddy if he is heterozygous (IBi).