Genetic Mutation Worksheet - Weebly
Name________________________________________ Class ____________________Date_______________
Genetic Mutation Worksheet
1. Define mutation: _____________________________________________________________________
2. Look at the following sequence: THE FAT CAT ATE THE RAT. Replace the third “T” with an “R” and regroup the letters in groups of three (codon)- write out the new groups of three.
a. T replaced with R: ________ ________ ________ ________ ________ ________
b. Does the sentence make sense? ______________
c. What type of mutation is this an example of? __________________________________
3. Look at the following sequence: THE FAT CAT ATE THE RAT. Remove the “F” and regroup the letters in groups of three (codon)- write out the new groups of three.
a. Remove the F: ________ ________ ________ ________ ________ ________
b. Does the sentence make sense? ______________
c. What type of mutation is this an example of? __________________________________
4. Look at the following sequence: THE FAT CAT ATE THE RAT. Remove the “R” and regroup the letters in groups of three (codon)- write out the new groups of three.
a. Remove the R: ________ ________ ________ ________ ________ ________
b. Does the sentence make sense? ______________
c. What type of mutation is this an example of? __________________________________
5. Contrast the results of the mutation in #3 to the mutation in #4.
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6. There are several types of genetic mutations. List four types of mutations.
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7. 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?
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8. Name two amino acids that have more than one codon. Name an amino acid that has only one codon.
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9. Given the following three mRNA sequences, two code for the same protein. Which two?
#1. AGU UUA GCA ACG AGA UCA
#2 UCG CUA GCG ACC AGU UCA
#3 AGC CUC GCC ACU CGU AGU
10. Below is the base sequence for the normal protein for normal hemoglobin and the base sequence for the sickle cell hemoglobin.
Normal GGG CTT CTT TTT
Sickle GGG CAT CTT TTT
A. Transcribe and translate the normal and sickle cell DNA.
B. Identify this as a point or frameshift mutation. Explain.
C. If the base sequence read GGG CTT CTT AAA instead, would this result in sickle cell hemoglobin? Explain.
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