D1.2.4—Transcription for gene expression Topic Practice
D1.2.4—Transcription for gene expression Topic Practice

IB Biology syllabusBiology SL/HLFirst assessment 2025
Practise using gels, blots and gene-expression data to judge when and where transcription occurs and compare mRNA production patterns.
How this is tested
- compare mRNA band patterns between tissues, treatments or time points
- deduce which gene is transcribed first from gel or blot evidence
- evaluate whether graph and blot data support a claimed transcription response
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