1. What is the name of the protein that the "eye color gene" encodes? 2. How is the protein in question #1 different in people with blue eyes versus people with brown eyes? 3. Is the blue eye allele or the brown eye allele dominant? 4. Is the blue eye allele or the brown eye allele recessive?

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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Part I:
1. What is the name of the protein that the "eye color gene" encodes?
2. How is the protein in question #1 different in people with blue eyes versus people with
brown eyes?
3. Is the blue eye allele or the brown eye allele dominant?
4. Is the blue eye allele or the brown eye allele recessive?
5. If Evan has blue eyes, what genotype (which two alleles) is he likely to have?
6. If Alexia has blue eyes, what genotype (which two alleles) is she likely to have?
7. Draw a Punnett square showing the genotype of all the possible children this couple
could have. Based solely on this information, what is the likelihood that Ryan is their
child?
8. Assuming that Alexia has been unfaithful, what is (are) the possible genotype(s) of the
man who is Ryan's biological father?
9. Assuming that Alexia has been faithful, suggest as many hypotheses as you can to
explain Ryan's phenotype.
Transcribed Image Text:Part I: 1. What is the name of the protein that the "eye color gene" encodes? 2. How is the protein in question #1 different in people with blue eyes versus people with brown eyes? 3. Is the blue eye allele or the brown eye allele dominant? 4. Is the blue eye allele or the brown eye allele recessive? 5. If Evan has blue eyes, what genotype (which two alleles) is he likely to have? 6. If Alexia has blue eyes, what genotype (which two alleles) is she likely to have? 7. Draw a Punnett square showing the genotype of all the possible children this couple could have. Based solely on this information, what is the likelihood that Ryan is their child? 8. Assuming that Alexia has been unfaithful, what is (are) the possible genotype(s) of the man who is Ryan's biological father? 9. Assuming that Alexia has been faithful, suggest as many hypotheses as you can to explain Ryan's phenotype.
Part 1 - High School Blues
Evan and Alexia had been happily married for seven years and had a delightful five-year-old son named Ryan. One
day, while going through his old high school biology textbook, Evan stumbled on some troubling information. In the
section on the genetics of eye color, he read that two blue-eyed parents cannot produce a brown-eyed child. This was
disturbing to him because both he and Alexia had blue eyes, but Ryan had brown eyes.
He and Alexia were very much in love and Evan didn't believe his wife had been unfaithful. Puzzled, he questioned his
wife, who confirmed she had been faithful to him. Evan had known Alexia long enough to recognize when she was
lying and detected nothing but honesty in her response.
What is going on?
Transcribed Image Text:Part 1 - High School Blues Evan and Alexia had been happily married for seven years and had a delightful five-year-old son named Ryan. One day, while going through his old high school biology textbook, Evan stumbled on some troubling information. In the section on the genetics of eye color, he read that two blue-eyed parents cannot produce a brown-eyed child. This was disturbing to him because both he and Alexia had blue eyes, but Ryan had brown eyes. He and Alexia were very much in love and Evan didn't believe his wife had been unfaithful. Puzzled, he questioned his wife, who confirmed she had been faithful to him. Evan had known Alexia long enough to recognize when she was lying and detected nothing but honesty in her response. What is going on?
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