This indicates that an animal or plant has had its genetic makeup altered in some way. This is often by combining the genes from different organisms to produce an organism with desirable characteristics
Reusable protein molecules which act as biological catalysts, changing the rate of chemical reactions in the body without being affected themselves
Deoxyribonucleic acid. This is the molecule which contains the genetic code. It coils up tightly inside chromosomes. DNA is a double helix made from two strands which are joined together by pairs of bases.
The use of biological organisms or enzymes to create, break down or transform a material.