Jack has type AB+ blood.
Jill has type O- blood.
In the Punnet square below, enter the genotypes of Jack and Jill and all the possible genotypes of their offspring. Use the format A/Rh+, O/Rh+, B/Rh-, for each of the possible allele contributions of Jack and Jill (one ABO allele and one Rh factor allele separated by a forward slash) and use the format AB/Rh+Rh-, OO/Rh-Rh- for the genotype of each offspring (two alleles for ABO (one allele from each parent) and two alleles for Rh factor (one allele from each parent)).