Disease: Phenyketonuria
Describe the relationship between the disease phenotype (i.e.,symptoms) and the
different genotypes with the disease-causing allele. In yourdescription use the terms:
homozygous, heterozygous, dominant/dominance, andrecessive.  *Note: this will look
different if your disease is sex-linked!
a.    Next, write out these differentgenotypes using capital letters for dominant
alleles, and lower-case letters for recessive alleles.
