5.3 | Mutations

Front

What mutation has occurred here? T-G-A-C-C-A T-G-A-G-C-A Options: Substitution, Deletion, Insertion, Frameshift

Back

Substitution

Front

Which of the following would result in a frameshift mutation? Options: Insertions only, Substitution only, Deletion only, Insertions and Deletions

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Insertions and Deletions

Front

A mutation in which only one nucleotide is altered is called a:

Back

Point Mutation

Front

DNA molecule segment: TTACGCAAG
Mutated DNA segment: TTCGCAAG
Type of mutation? Options: Substitution, Deletion, Insertion, Inversion

Back

Deletion

Front

Mutation

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A change in the DNA sequence

Front

ATTTGAGCC- Original
ATTGAGCC - Mutated
The example above is an example of a 

Back

Deletion -Frameshift

Front

Why are insertion and deletion (frameshift) mutations so harmful?

Back

They change all of the codons from the mutation on down the line, which changes the amino acid sequence.

Front

What mutation has occurred here? T-G-A-C-C-A T-G-A-G-C-A Options: Substitution, Deletion, Insertion, Frameshift

Back

Substitution

Front

A segment of DNA produces methionine, threonine, histidine, aspartate, and glycine when translated. A substitution mutation occurs and causes the synthesis of the segment shown. Which is the new peptide chain when the new DNA segment is translated? Options: methionine, leucine, histidine, aspartate, glycine, methionine, phenylalanine, histidine, aspartate, glycine, Methionine, proline, histidine, aspartate, glycine, methionine, serine, histidine, aspartate, glycine

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methionine, serine, histidine, aspartate, glycine

Front

Which mutation will cause translation to stop? Options: Mutations 1 and 3 only, Mutation 1 only, Mutation 2 only, Mutations 1, 2, 3

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Mutation 1 only