Multiple Choice
Which of the following statements is true of genetic mutations?
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15. Gene Expression
Mutations
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What type of mutation alters the reading frame in the mRNA downstream of the mutation?
A
Missense mutation
B
Point mutation
C
Silent mutation
D
Frameshift mutation
Verified step by step guidance1
Understand that a mutation is a change in the nucleotide sequence of DNA, which can affect the resulting protein.
Recognize that the reading frame is the way nucleotides in mRNA are grouped into codons, each consisting of three nucleotides.
Identify that a frameshift mutation occurs when nucleotides are inserted or deleted from the DNA sequence, altering the reading frame of the mRNA.
Note that this type of mutation shifts the grouping of the nucleotides into different codons, potentially changing every amino acid coded for after the mutation.
Differentiate frameshift mutations from other types, such as missense, point, and silent mutations, which do not alter the reading frame.
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