Multiple Choice
How do somatic mutations differ from inherited mutations?
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15. Gene Expression
Mutations
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What is an example of a neutral mutation?
A
A silent mutation that does not change the amino acid sequence
B
A nonsense mutation that introduces a premature stop codon
C
A missense mutation that changes one amino acid in a protein
D
A frameshift mutation that alters the reading frame
Verified step by step guidance1
Understand the concept of a neutral mutation: A neutral mutation is a change in the DNA sequence that does not affect the organism's fitness. It typically does not alter the function of the protein produced.
Identify the types of mutations listed: Silent mutation, nonsense mutation, missense mutation, and frameshift mutation.
Examine the silent mutation: A silent mutation occurs when a change in the nucleotide sequence does not change the amino acid sequence of the protein due to the redundancy in the genetic code. This is often considered a neutral mutation.
Consider the nonsense mutation: This type of mutation introduces a premature stop codon, leading to a truncated protein. It usually affects protein function and is not considered neutral.
Evaluate the missense and frameshift mutations: A missense mutation changes one amino acid, potentially altering protein function. A frameshift mutation changes the reading frame, often drastically affecting the protein. Both are typically not neutral.
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