Unit 5 Notes- Mutations Review

Multiple Choice

The following DNA sequence undergoes transcription. What would be the resulting mRNA sequence?

• TAC AAT GCC AGT GGT TCG CAC

• AUG UUA CGG UCA CCA AGC GUG

• UAC AAU GCC AGU GGU UCG CAC

• ATG TTA CGG TCA CCA AGC GTG

Multiple Choice

Why are mutations important for genetic diversity in living organisms?

• They always cause diseases

• They provide life with genetic diversity

• They have no effect on organisms

• They only occur in animals

Multiple Choice

Which of the following is NOT an environmental factor that can cause mutations?

• Sunlight/UV exposure

• Processed meats

• Cigarette smoke

• Exercise

Open Ended

Explain how the concept of 'three letter words' relates to the way genetic information is read in cells.

Multiple Choice

During translation, what is the role of tRNA?

• It synthesizes mRNA

• It brings amino acids to the ribosome

• It unwinds DNA

• It creates peptide bonds

Multiple Choice

Which of the following best describes a substitution point mutation?

• A nucleotide is replaced by another

• A nucleotide is removed

• A nucleotide is added

• A codon is duplicated

Multiple Choice

The following DNA mutation occurs. Which of the following best describes this mutation?

• A substitution has occurred and will not result in a frameshift mutation.

• A substitution has occurred and will result in a frameshift mutation.

• An insertion has occurred and will result in a frameshift mutation.

• An insertion has occurred and will not result in a frameshift mutation.

Multiple Select

Which codon change would result in a silent mutation for leucine?

• CUU to CUA

• CUU to UUA

• CUU to UUU

• CUU to GUA

Multiple Choice

The following DNA mutation occurs. The resulting amino acid sequence can be described as

• a silent mutation

• a missense mutation

• a frameshift mutation

• a nonsense mutation

Multiple Choice

What is a Gene?

• A segment of RNA that encodes for a protein
• A chromosome
• A segment of DNA that encodes for a protein
• Your genome

Multiple Choice

Which type of point mutation does NOT affect the expressed protein and results in the same normal functioning protein?

• Silent mutation

• Missense mutation

• Nonsense mutation

• Frameshift mutation

Multiple Choice

ATTTGAGCC- Original

ATTGAGCC - Mutated

The example above is an example of a

• Insertion- Frameshift

• Deletion- Substitution

• Deletion -Frameshift

• All of the above

Multiple Select

Which of the following can cause a frameshift mutation?

• Insertion of a base

• Deletion of a base

• Substitution of a base

• Both insertion and deletion

Multiple Choice

The following DNA mutation occurs. Which of the following best describes this mutation?

• An insertion has occurred and will result in a frameshift mutation.

• An insertion has occurred and will not result in a frameshift mutation.

• A deletion has occurred and will result in a frameshift mutation.

• A deletion has occurred and will not result in a frameshift mutation.

Multiple Choice

Which mutation will cause translation to stop?

• Mutations 1 and 3 only

• Mutation 1 only

• Mutation 2 only

• Muations 1, 2, 3