On the question of genetically modified insects, questions related to genetically modified insects

The genes of any organism are the product of long-term (measured in 10,000 years) evolution, and there is a strong fixed law of completing the life cycle. Insects, in particular, have existed on Earth for a much longer period of time than those of high-level animals, including humans, which limits the difficulty of insect genes to mutate. The older the animal, the more perfect it is to evolve.

Today, they have reached the limit of evolution, and unless there is a major climate change on the earth, it is difficult for insects to mutate without external interference.

Let's talk about the methods of external force change, such as transgenic technology, many countries are now prohibiting research on transgenic synthesis, because this will lead to serious conflicts in human social ethics and laws. Behind the scenes, though, many countries or organizations do secretly conduct similar research on their own. These studies are carried out under the banner of scientific research and are mainly used for military purposes.

Because if you can mass-produce one-time, fast-growing lifeforms, and if you also have those wild animals like lions, tigers, or wolves, then it is the best war expendable. However, the current society cannot accept this problem. For example, if a monkey is introduced with human genes, or a human with wolf genes is used, do they have human rights, and should they be treated the same as humans?

This is a blank in many national laws, and such studies will not be made public until the law authorizes or resolves them.

Regarding genetically modified plants, the United States has concluded that there are safety problems in genetically modified plant foods, and no institution has publicly acknowledged the progress of research on genetically modified animals. However, there is some related work, such as cloning sheep, rats, cows and other scientific experiments, which are reported from time to time.

As for whether there is another way to let insects grow up, or mutate, theoretically there is still one, that is, through radiation, to induce genetic mutation. Genetic variation is the only driving force behind biological evolution. Of course, this variation can cause insects to become pretty, some to make insects ugly, some to make insects more powerful, and it can also make insects more vulnerable.

This is completely random and depends on the site of the gene mutation. At present, there are still uncontrollable drawbacks in the scientific method of radiation-induced mutation. One is that the direction of mutation cannot be controlled, and the other is that the quantitative and qualitative changes of mutation cannot be controlled.

The same organism, the same volume or weight, received the same dose of radiation induced, and the result may be one mutation, and the other may be nothing. Those who have mutated may also die quickly, and there is no time to mate and pass on the mutated genes. Therefore, the test of radiation-induced mutation is actually very unreliable.

It takes a lot of time and money to keep repeating the exploration.

This one is not difficult. At present, the most used ornamental fish are genetically modified ornamental fish.

Summary. Genetically modified organisms can be simply divided into genetically modified plants, transgenic animals and genetically modified microorganisms according to the objects. Then the safety of genetically modified organisms should also be considered from these three aspects.

Genetically modified organisms can be simply divided into genetically modified plants, genetically modified animals and genetically modified microorganisms according to the objects. Then the safety of the Zen Zen reed to the Kiga belt should also be considered from these three aspects.

Genetically modified plant chain branches:1Genetically modified crops themselves become weeds; 2.

Genetically modified crops make their relatives wild weeds or superweeds; Front wheel 3Genetically modified crops can produce new viruses or diseases; 4.the dangers of genetically modified crops to non-target organisms; 5.

The invasion of new habitats by genetically modified crops as alien species threatens biodiversity; 6.Impacts of Gene Crops on Ecosystems and Ecological Processes; 7.Other unforeseen risks.

In terms of transgenic animals: whether there are toxic proteins in the meat, eggs, and milk of animals, whether there are allergens, etc., and whether some artificial organs using genetically modified organisms have strong immune dismantling and elimination reactions, etc., whether they lead to the mutation of some species, the formation of a single superior community, and then transform into invasive alien species, causing devastating blows to the ecology and other potential safety risks.

Genetically modified microorganisms: bacteria, fungi, viruses, viruses and other microorganisms, if not careful, will spring will be very dangerous, so in all the laboratories that are in short supply, the management of microorganisms is the strictest, such as the leakage of some pathogenic bacteria, which will cause great immeasurable losses, such as now some countries, the biological terror and biochemical **, these are the destructive ** and so on.

It's not that the bugs don't eat them, it's that the bugs die after they eat them.

Genetically modified insect-resistant crops are transgenic with BT protein. BT (Bacillus thuringiensis) protein only has a specific poisoning effect on lepidopteran insects such as borers. After the insect feeds on the transgenic insect-resistant crop, the BT protein is cleaved into a toxin by a unique enzyme under the alkaline conditions of the insect's midgut, and then binds to a specific receptor on the intestinal wall, resulting in the perforation of the insect's intestine and death.

Therefore, crops with the BT gene can be insect resistant.

Mammalian gastric juice is strongly acidic, and there are no receptors in the stomach and intestines that bind to BT toxins. After entering the gastrointestinal tract of mammals, Bt proteins, like other proteins, are decomposed into amino acids by the action of gastric juice and become nutrients that can be used by mammals.

Years of research have repeatedly confirmed that BT insecticidal protein is harmless to mammals, birds, fish and non-target insects, and does not remain in the environment like chemical pesticides, so it will not cause adverse effects on the ecological environment and biodiversity. BT protein has been used for more than 100 years, and the biopesticide developed with BT has a record of safe use for more than 70 years, and is the most used biological insect inhibitor in organic food.

1. Introduction of exogenous genes (exogenous genes to be expressed).

2. Some carriers can integrate genes into the DNA of organisms, and whether foreign genes can play a role depends on whether they can be expressed in the organism, regardless of the amount of DNA, the production of proteins after transcription and translation directly or indirectly affects metabolism.

3same

Q1: How do GMOs work? It should be the principle of genetically modified technology! At the high and medium level, the principle is gene recombination and selective expression of genes.

Q2: GMO engineering may not necessarily require plasmids, but there is no doubt that vectors are needed. Transgenic cattle are also obtained by combining the linearized target vector carrying the mutated lactoglobulin gene to somatic cells through homologous recombination.

Plasmids are a type of vector, such as viruses, which can also be vectors, so plasmids are not necessarily needed for the introduction of exogenous DNA, and the answer is self-evident.

In addition, transgenic engineering, from the definition, it can be seen that transgenic engineering is also called recombinant DNA technology, why can ontological recombination of DNA be carried out, but foreign recombination cannot? Just take the analogy and accept it slowly.

Q3: I guess you will know this kind of topic at once, right, class leader?

The selection of AA modern molecular biology technology is represented by genetic engineering, that is, genetic engineering technology, also known as transgenic technology.

b Species hybridization technology is a more traditional technology and has nothing to do with transgenic technology. It doesn't match the title.

c Gene mutation technology, which has nothing to do with transgenic technology. It doesn't match the title.

a.Modern molecular biotechnology.