Final answer:
Individuals labeled 1, 2, and 3 have the genotypes aa, AA, and AA, respectively, in the given pedigree showing the occurrence of nf1 in Kai's family.
Step-by-step explanation:
In the given pedigree, individuals with nf1 are shown in blue and have the genotype aa, while unaffected individuals are shown in yellow. To determine the genotypes of individuals labeled 1, 2, and 3, we can use the information provided in the question. Since individual 1 has nf1 (shown in blue), their genotype would be aa. Since individual 2 does not have nf1 (shown in yellow), their genotype would be AA. Since individual 3 has nf1 (shown in blue), their genotype would also be AA.