sciencegcse← B6 overview

Biology · Paper 2 · Higher Tier only · B6

Higher: genetic-engineering techniques

Key ideas1 of 3

Isolate and carry a gene

Use an enzyme to isolate the required gene from donor DNA. Insert the gene into a vector, such as a bacterial plasmid or a virus. A plasmid is a small circular DNA molecule; it is not a whole bacterial cell.

The useful gene is identified in donor DNA; a bacterial plasmid is obtained.

Try exam practice →
Practice, downloads and sources

Daily 5 · Exam practice · Revision sheet ↓

Higher Tier only · B6. Fourteen core lessons, followed by two labelled Higher Tier lessons.

AQA Combined Science Trilogy 8464 · 4.6.2.4. Original notes, questions and diagrams. Models are simplified; teaching data are illustrative.