This deep dive covers What is Genetic Engineering? within Genetic Engineering for GCSE Biology. Genetic modification, gene therapy, and biotechnology applications It is section 1 of 11 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.

What is Genetic Engineering?

The Cut and Paste Analogy

Genetic engineering is like cut and paste for genes. Find a useful gene in one organism (e.g., human insulin gene), CUT it out with enzyme "scissors," then PASTE it into another organism (e.g., bacteria). Now the bacteria produces human insulin!

Directly modifying an organism's DNA to give it new characteristics:

Identify the gene for desired characteristic
Cut out the gene using enzymes
Insert gene into vector (e.g., plasmid, virus)
Transfer vector into target organism
Gene is expressed — organism shows new characteristic

Practice questions for Genetic Engineering

Which of the following is a benefit of genetic engineering?

A. It can only be used for humans
B. It can introduce new traits into an organism by modifying its DNA sequence
C. It is expensive and time-consuming due to the complexity of genome manipulation
D. It only works for plants, not animals or microorganisms

2 marksfoundation

A genetic engineer uses a gene from one organism to introduce a desirable characteristic into another organism. This process is an example of which type of genetic engineering?