What term describes any change that affects the sequence of bases in a gene?

• A. Replication
• B. Mutation
• C. Transcription
• D. Translation

Answer: (B)

The term that describes any change affecting the sequence of bases in a gene is mutation. Mutations can occur in various forms, such as point mutations, insertions, deletions, or duplications, and they can arise spontaneously during DNA replication or as a result of environmental factors. These changes can alter the genetic code, potentially affecting how proteins are synthesized or how traits are expressed. Understanding mutations is crucial in fields like genetics, molecular biology, and evolutionary biology, as they are a primary source of genetic variation in populations. This variation can lead to adaptations or, in some cases, genetic disorders, highlighting the significance of mutations in biological processes.