Albinism is a recessive disorder in which the skin and hair fail to produce pigment. The following questions ask you to evaluate the following pedigree chart in which "N" is the allele for normal pigmentation and "n" is the allele for albinism. The shaded circles for Deirdre and Shannon represent the only individuals expressing the disorder.
What is Deirdre's phenotype?
◦ Albino
◦ Normal
◦ nn
◦ Cannot be determined