genotyp e .
haplotype .
phenotyp e .
12 . The genetic disorder phenylketonuria ( PKU ) is caused by a recessive allele ( n ). The family tree below shows the incidence of the disease over three generations .
What is the genotype of Jane ' s husband ? ( see Family Tree above )
The genotype of Jane ' s husband is ( Nn ).
13 . Assuming that both parent plants in the diagram below are homozygous , why would all of the f1 generation have yellow phenotypes ?