Reality Genetic modification occurs in nature all the time. Plants often spontaneously change their DNA in response to external forces, which is another example of genetic modification or change. Plants have been selectively crossbred for centuries. Farmers and scientists have genetically modified almost everything we eat today over the years to grow in difficult conditions, give better yields or offer specific benefits to consumers. It allows us to improve crops in a much more exact manner than through traditional plant breeding techniques.
Biotechnology is an umbrella term for a series of different tools.
Traditional plant and animal breeding methods as well as the fermentation process involved in making yeast for bread are examples of the tools of biotechnology. So is genetic engineering. Reality Genes are found in almost every cell of all plants and animals. They are the units of inheritance, composed of DNA, which are transmitted from parents to offspring during reproduction. Every time we eat part of a plant or animal we ingest millions of genes and thus the DNA they are made of.