The difference between genetically modified crops and ordinary plants is that there are more genes that can produce additional characteristics. As early as 1983, biologists already knew how to use biological technology to transplant foreign genes into the DNA of certain plants in order to Make it produce some new characteristics that can not be obtained by hybridization: resistance to herbicides, resistance to plant viruses, resistance to certain pests, etc. The genes used for transplantation can come from any living body: bacteria, viruses , Insects, etc. Which of the following understandings of the concept of "GMO crops" is correct? ['Crops with additional characteristics due to changes in environmental impact DNA.', 'Crops capable of producing additional genes resistant to herbicides, plants and viruses.', 'A new hybrid crop formed by transplanting genes from other living organisms.', 'Crops that have been transplanted with genes from other organisms to produce additional characteristics.']