This text is written so that even you who have forgotten much of what you may have learned about genetics will understand it. The difference between mating and genetic engineering at a glance Conclusion 1. DNA contains a complete set of information determining the structure and function of a living organism, be it a bacterium, a plant or a human being. It contains the instructions for creating all the proteins in the body.
Proteins are truly remarkable molecules.
They can have many different properties. All the various tissues in the body are mainly made of proteins. Likewise all kinds of regulatory substances like enzymes, hormones and signal substances. There are many other proteins like for example different substances protecting from infection like antibodies. The properties of a protein are entirely decided by its form, which is decided by the sequence of its building blocks, the amino acids.