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How can a mutation in non-coding DNA change the activity of a cell? A - OCR Gateway - GCSE Biology - Question 12 - 2020 - Paper 4
Question 12
How can a mutation in non-coding DNA change the activity of a cell? A. It can change the amino acid sequence in a protein. B. The base sequence of mRNA may be alte... show full transcript
Worked Solution & Example Answer:How can a mutation in non-coding DNA change the activity of a cell? A - OCR Gateway - GCSE Biology - Question 12 - 2020 - Paper 4
Step 1
D. Transcription of mRNA may be stopped.
Answer
A mutation in non-coding DNA can lead to changes in the regulatory sequences that control the transcription of nearby genes. This means that the transcription of mRNA, which is crucial for protein synthesis, can be halted. If transcription does not occur, the corresponding protein will not be produced, resulting in a change in cell activity.