Multiple Choice
Which of these changes to the DNA triplet 3' GCT 5' will affect the protein produced?
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15. Gene Expression
Mutations
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Which of the following best describes a harmful mutation?
A
A mutation that leads to a beneficial trait in an organism
B
A mutation that causes a disease or decreases an organism's fitness
C
A mutation that has no effect on the organism's phenotype
D
A mutation that occurs in non-coding regions of DNA
Verified step by step guidance1
Understand what a mutation is: A mutation is a change in the DNA sequence of an organism. Mutations can occur naturally or be induced by external factors.
Recognize the types of mutations: Mutations can be beneficial, neutral, or harmful. Beneficial mutations improve an organism's fitness, neutral mutations have no effect, and harmful mutations decrease fitness or cause disease.
Identify the impact of harmful mutations: Harmful mutations can lead to diseases or reduce an organism's ability to survive and reproduce. This is often due to changes in critical genes that affect important biological functions.
Consider the location of mutations: Mutations in coding regions can affect protein function, while mutations in non-coding regions may have less impact unless they affect gene regulation.
Evaluate the options: The correct description of a harmful mutation is one that causes a disease or decreases an organism's fitness, as it negatively impacts the organism's ability to thrive.
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