Name________________________________ Per________
Genetic Mutation Worksheet
1.What are the types of gene mutations?
2. An error during what cellular process would create a gene mutation?
3. A geneticist found that a particular mutation had no effect on the protein coded by a gene.
What do you think is the most likely type of mutation in this gene? Why?
4. Name one amino acid that has more than one codon and one amino acid that only has one
codon.
5. Look at the following sequence: THE FAT CAT ATE THE RAT.
a. Delete the first H and regroup the letters in groups of three- write out the new groups of
three.
b. Does the sentence still make sense? ________
c. What type of mutation does this demonstrate? _____________________
d. What are the different causes of this type of mutation? ____________________________
6. You have a DNA sequence that codes for a protein and is 105 nucleotides long. A frameshift
mutation occurs at the 85th base- how many amino acids will be correct in this protein?
7. Given the following three mRNA sequences, which two code for the same protein?
#1. AGU UUA GCA ACG AGA UCA
#2. UCG CUA GCG ACC AGU UCA
#3. AGC CUC GCC ACU CGU AGU
8. What type of mutation changes a base pair without changing the amino acid?
