Name _________________________
Bozeman- Genotypes and Phenotypes
Directions: Watch the Paul Anderson video on genetic genotypes and phenotypes using the following
website:
http://www.youtube.com/watch?v=OaovnS7BAoc&feature=youtu.be
Answer the related questions below:
1. What is the difference between genotype and phenotype?
2. What would be the result of a mutation called a deletion or an addition on the reading of the
letters in the DNA?
3. How can you identify sickle cell anemia by looking at the blood?
4. How is the DNA changed in people with sickle cell anemia? How does the DNA change cause a
change in the protein?
5. How do mutations come about? What role does DNA polymerase play in this error?
6. What kinds of radiation cause mutations?
7. How do neutral mutations act like a biological clock?
8. Discuss the example of a beneficial mutation found in Helper T cells.
9. What do the values 70% and 7% have to do with harmful mutations?
10. What mistakes can occur in meiosis?
11. Give an example of how meiotic mistakes can be advantageous.
12. Give an example of how meiotic mistakes can lead to sterility.
13. Give an example of how meiotic mistakes can lead to disorders.
14. Why is it both an advantage and a disadvantage to carry the sickle cell gene?