### Part I – High School BluesEvan 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?** ### Genetics Questions Related to Eye Color#### 5. If Evan has blue eyes, what genotype (which two alleles) is he likely to have?**Answer:**Evan is likely to have the genotype `bb`, where both alleles are recessive for blue eye color. #### 6. If Alexia has blue eyes, what genotype (which two alleles) is she likely to have?**Answer:**Similar to Evan, Alexia is likely to have the genotype `bb`, with both alleles being recessive for blue eye color.#### 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?**Explanation and Answer:**To create the Punnett square, align the possible alleles from each parent. Since both Evan and Alexia have blue eyes (`bb`), their Punnett square will look like this:| | b | b ||-------|-----|-----|| **b** | bb | bb || **b** | bb | bb |All possible genotypes for the children will be `bb`, meaning every child will have blue eyes. The likelihood that Ryan is their child, with the given information, depends on Ryan’s eye color. If Ryan has blue eyes, then it is very likely he is their child, based on the genotype probabilities.#### 8. Assuming that Alexia has been unfaithful, what is (are) the possible genotype(s) of the man who is Ryan’s biological father?**Answer:**If Ryan does not have blue eyes, then the biological father's genotype could be different. Potential genotypes of the biological father could include:- **Heterozygous brown-eyed father (`Bb`)**: This would mean the father has one dominant allele for brown eyes and one recessive allele. - **Homozygous brown-eyed father (`BB`)**: Both alleles here would be dominant for brown eyes. Ryan’s different eye color would suggest the inclusion of a dominant allele from the biological father.#### 9. Assuming that Alexia has been faithful, suggest as many hypotheses as you can to explain Ryan’s phenotype.**Answer:**If Alexia has been faithful and Ryan does not exhibit the expected blue eye phenotype, several hypotheses could be considered:1. **Mutation**:

Name: ### Part I – High School BluesEvan and Alexia had been happily marrie
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: ### Part I – High School BluesEvan 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.