Explore free A-level Biology revision articles about gene technologies, including producing DNA fragments, the polymerase chain reaction, transforming bacteria and electrophoresis. These explanations can support students studying AQA, OCR A or Edexcel Salters–Nuffield Biology, although the precise content required varies between exam boards.
Gene technologies revision articles
- Producing DNA Fragments – Gene Technologies Ep 1
This article begins a new series about gene technologies. Many gene technologies, especially recombinant DNA technologies, begin with the need to isolate or make DNA… Continue Reading → - Polymerase Chain Reaction (PCR) – Gene Technologies Ep 2
Once a DNA fragment has been isolated or produced (see the last article), the next step is often to produce many copies of it. One… Continue Reading → - Transforming bacteria – Gene Technologies Ep 3
So far in the genetic engineering journey we have learnt how to isolate or produce a DNA fragment, and amplify it in vitro using PCR…. Continue Reading → - Electrophoresis – Gene Technologies Ep 4
Electrophoresis is a method used to separate fragments of DNA or RNA based on their size (length/number of bases*) using an electric current. It has… Continue Reading →
Continue your A-level Biology revision
These free articles are designed to support your understanding of individual Biology topics. Browse the other revision topics available on the website, or explore the complete specification-matched notes for your exam board.
