Mutations

Read the text on pages 104 and 105 then answer the questions below.

1. What is a mutation?

2. What happens if the mutation occurs in a body cell, like the skin?

3. What happens if the mutation occurs in the sex cell, like an egg or a sperm?

4. Look up the word phenotype in the glossary. In your own words, what is phenotype?

5. Are mutations good or bad? Explain.

6. What example does the book give for a harmful mutation?

7. What is another example of a harmful mutation that you can think of?

8. What example does the book give for a helpful mutation?

9. What is another example of a helpful mutation that you can think of?

CB31Name ____________________________________________

Study the diagram below.

10. What are the three types of mutations shown?

11. What is a silent mutation? Does it change the protein that is made?

12. How can one letter changed on the DNA strand change the protein that the body makes? Explain by referring to the codon and amino acid.