Mutations & Gene Expression

Which type of mutation occurs when there is an addition or removal of a base?

• missense mutation

• nonsense mutation

• frameshift mutation

• point mutation

What type of mutation is shown in the diagram?

• Point mutation - missense

• Frameshift Mutation - deletion

• Frameshift Mutation - addition

• Point mutation - nonsense

What type of mutation is this?

• Nonsense mutation

• Missense mutation

• Silent mutation

• Frameshift mutation

Occurs when the DNA change does not alter the amino acid sequence of the polypeptide.

• Frameshift Mutation

• Insertion

• Missense mutation

• Silent Mutation

DOES THE DNA MUTATION ALWAYS ALTER THE AMINO ACID SEQUENCE?

• Yes

• No

The change in the second codon of DNA sequence from GAA to GAG does not affect the amino acid sequence. This is an example of ........................................

• Nonsense mutation

• Missense mutation

• Silent Mutation

• Frameshift Mutation

What type of gene mutation has occurred here? 
T-G-A-C-C-A
T-G-A-C-C-A-A

• Base Substitution
• Base Deletion
• Base Insertion
• Frameshift 

DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.

• Base Substitution
• Base Insertion
• Base Inversion
• Translocation

Where do mutations occur?

• DNA and RNA
• DNA 
• RNA
• mRNA and tRNA

A base pair substitution can result in all of the following except __________.

• Missense mutation
• Frameshift Mutation
• Silent Mutation
• Nonsense mutation