Multiple Choice
When do chromosomal mutations usually occur?
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15. Gene Expression
Mutations
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Which factor is most likely to cause an increase in the frequency of genetic mutations in humans?
A
Adequate sleep
B
Regular exercise
C
Exposure to ultraviolet radiation
D
A balanced diet
Verified step by step guidance1
Understand what genetic mutations are: Genetic mutations are changes in the DNA sequence of an organism. These changes can occur naturally or be induced by external factors.
Identify factors that can cause mutations: Mutations can be caused by various factors, including environmental influences, chemical exposure, and radiation.
Evaluate the options given: Adequate sleep, regular exercise, and a balanced diet are generally associated with maintaining good health and do not typically cause genetic mutations.
Consider the role of ultraviolet radiation: Ultraviolet (UV) radiation is known to cause damage to DNA, leading to mutations. It can cause changes in the DNA sequence by inducing errors during DNA replication.
Conclude that exposure to ultraviolet radiation is the most likely factor to increase the frequency of genetic mutations, as it directly affects the DNA structure.
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