Question

IMPACTS OF MUTATIONS ON PROTEINS (pls help!!)

1. What is a mutagen? What is a mutation?

2. When the mutation caused the addition of one base into the DNA sequence, there was one base (a G) left over at the end. Does this one base code for an amino acid? WHY OR WHY NOT?

3. Compare a normal DNA sequence to the mutated DNA sequence. Is the entire sequence of DNA different? Explain

4. Compare a normal protein to a mutated protein. Is the entire protein different? Explain.

5. Predict how this small change could impact the function of the protein with the mutation compared to the protein without?

Answer 1

1. A mutation is an alteration of a base of DNA or a section of DNA. A mutagen is something that may cause a mutation.

2.The single base does NOT code for an amino acid. Every 3 vases codes for an amino acid.

3-5. It depends on the sequence you have. If a base was switched with a different base, then the sequence may not really change and it may still code for the same amino acid. If a base was inserted of deleted, this would change the entire sequence and change the amino acids it codes for, therefore changing the protein being created.