A1.2.1—DNA as genetic material Topic Practice
A1.2.1—DNA as genetic material Topic Practice

IB Biology syllabusBiology SL/HLFirst assessment 2025
Practise recognising DNA as the genetic material in organisms and interpreting genome sources or transformation evidence from exam diagrams.
How this is tested
- state DNA, not RNA or general nucleic acid, as the genetic material in organisms
- identify valid genome sources by considering where nuclear and mitochondrial DNA are found
- explain transformation evidence as DNA transfer between bacterial strains in diagram questions
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