1-BIO ALBINISM

*What is Dawn's genotype?* a. NN or Nn b. Nn c. NN d. nn

a. NN or Nn

*What is Deirdre's phenotype?* a. nn b. Albino c. Cannot be determined d. Normal

b. Albino

*What was the probability that Deirdre and Geoff's first child would express the albino trait?* a. 1/4 b. 1/2 c. 3/4 d. 1/8

b. ½

*What is Geoff's genotype?* a. NN b. Cannot be determined c. Nn d. nn

c. Nn

According to the pedigree above, *who is a not a carrier of albino?* a. Brandon b. Bill c. Aaron d. All of the above are carriers of albino

d. All of the above are carriers of albino

*ALBINISM*

Albinism is a recessive disorder in which the skin and hair fail to produce pigment. The following question(s) ask you to evaluate the pedigree chart shown here 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.

Albinism is a recessive disorder in which the skin and hair fail to produce pigment. The following question(s) ask you to evaluate the pedigree chart shown here 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 Bill's genotype?* a. nn b. NN c. Cannot be determined d. Nn

d. Nn