Which of the following statements is true of genetic mutations?
A) Errors in DNA duplication are normally irreparable.
B) Mutations that occur in somatic cells are inheritable.
C) Mutations may result from environmental agents.
D) Errors in DNA replication are most often fatal.
Ans: C
Feedback:
In addition to random errors, extrinsic factors such as environmental agents, chemicals, and radiation can induce errors in DNA duplication. DNA repair mechanisms resolve the majority of mutations. As a result, most mutations are corrected and do not result in pathology or death. Only those DNA changes that occur in germ cells can be inherited.
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