Multiple Choice
Which type of mutation is primarily responsible for generating new variations of a trait within a population?
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17. Mutation, Repair, and Recombination
Types of Mutations
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Which best describes somatic mutations?
A
They occur in non-reproductive cells and are not passed to offspring.
B
They always result in a change in the amino acid sequence of a protein.
C
They occur in gametes and are inherited by the next generation.
D
They are caused exclusively by environmental factors such as radiation.
Verified step by step guidance1
Understand the definition of somatic mutations: these are changes in the DNA sequence that occur in somatic (non-reproductive) cells of an organism.
Recognize that somatic mutations affect only the individual in which they occur and are not passed on to offspring because they do not occur in gametes (sperm or egg cells).
Note that somatic mutations do not always result in a change in the amino acid sequence of a protein; some mutations can be silent or occur in non-coding regions of DNA.
Acknowledge that somatic mutations can be caused by various factors, including environmental influences like radiation, but they are not exclusively caused by these factors.
Conclude that the best description of somatic mutations is that they occur in non-reproductive cells and are not inherited by the next generation.
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