It is the development and implementation of technologies to characterize the mechanisms through which genes and their products function and interact with each other and with the environment.

GMO - Genetically modified organism (GMO) is Genetic material of an organism is  altered with the help of genetic engineering techniques generally known as recombinant DNA technology. DNA molecules from one source is combined with the DNA of other in vitro into one molecule to create a new gene. The recombinant DNA is then transferred into an organism causing the expression of modified or novel traits. The product is also known as an Genetically Engineered Organism or GEO.

Examples Transgenic animals (mice, fish),  transgenic plants (BT Cotton, Flavour Savour Tomato), or various microbes (fungi and bacteria) . The production and use of GMOs are ivolved in biology or medicine, for the production of pharmaceuticals and industrial enzymes, and for direct, and often controversial, applications aimed at improving human health (e.g., gene therapy) or agriculture (e.g., golden rice). For example, a gene from a jellyfish, encoding a fluorescent protein called GFP, can be physically linked and thus co-expressed with mammalian genes to identify the location of the protein encoded by the GFP-tagged gene in the mammalian cell. The indispensable use of GMO is in many areas of research, such as to study the mechanisms of human and other diseases .

Traditional breeding techniques involve mixing thousands of genes, which in addition to providing the beneficial trait, also result in the loss of other traits of that crop considered to be valuable.
Significant time and effort is required to restore the other valued traits of that crop while maintaining the
desired trait using traditional breeding techniques.
Genetic modification permits food developers to add or enhance useful traits more specifically or remove
undesirable traits.
The technology permits food developers to add a desired trait in a more precise manner than traditional breeding without the loss of other beneficial characteristics since unwanted genes are not transferred.

Transgenic crops with TPS will not spread their genes to surrounding plants.
The TPS genes are transferred on pollen, so any plant pollinated by a TPS plant will produce dead seeds.
This would prevent accidental gene flow from transgenic crops to wild plant populations.
Companies may develop improved crop varieties .If a seed company knows it will be able to "protect its
investment" in the development of new varieties, including transgenics, by preventing farmers from saving seed and replanting from year to year, more effort will be put into the development of improved varieties.

Conventional breeding is a method in which genes for pesticidal traits are introduced into a plantthrough
natural methods, such as cross-pollination. For a plant-incorporated pesticide, one wouldbreed a plant that
produces a pesticide with a sexually compatible plant that does not possess thisproperty but possesses other
properties of interest to the breeder, e.g., sweeter fruit. Then, out of theoffspring, the breeder would choose the offspring plant that produces the pesticide, and thereforeexpresses the desired pesticidal trait, as well as
producing sweeter fruit. Genetically engineered plant-incorporated protectants are created through a process that utilizes several different modern scientific techniques to introduce a specific pesticide-producing gene into aplant?s DNA genetic material. For example, a desired gene that produces a desired pesticides (e.g., the insecticidal protein Bt from the bacterium, Bacillus thuringiensis) can be isolated from anotherorganism, such as a bacterium, and then inserted into a plant. The desired gene becomes part of theplant?s DNA. The plant then expresses the incorporated gene and produces the pesticidal protein as itwould one of its own omponents.

GM stands for "genetically modified". An organism, such as a plant, animal or bacterium, is considered genetically modified if its genetic material has been altered through any method, including conventional breeding. A "GMO" is a genetically modified organism.

GE stands for "genetically engineered". An organism is considered genetically engineered if it was modified using techniques that permit the direct transfer or removal of genes in that organism. Such techniques are also called recombinant DNA or rDNA techniques.