It was once popular around the world in the early 20th century. At this time, physical anthropology and genetics were flourishing, and a new theory called "eugenics" was emerging. Don't think this word is familiar to the Chinese. The eugenics discussed at that time was completely different from the "fewer children, eugenics and happy life" advocated by Chinese family planning propaganda. The eugenics currently practiced in China refers to premarital examinations, age-appropriate reproduction and genetic counseling, which belongs to "negative eugenics". And the one you're talking about, which was popular in the early 20th century, is called "positive eugenics." This positive eugenics was once practiced in the United States by very extreme means. In 1907, Indiana passed a sterilization law. The content of this bill is also very simple: criminals must be sterilized, challengesmental cients must be sterilized and the poor must be sterilized. If our expert team believes you should be sterilized, we will send you for sterilization. Eventually, 18 U.S. states implemented similar measures, and it wasn't until 1977 that these sterilization laws were completely repealed. At that time, tens of thousands of people had been sterilized. It was the Nazis who really pushed positive eugenics into a dead end. I think when you see the word Nazi, everyone should have guessed what he did. At first, the Nazis created a “Committee for the Scientific Treatment of Serious Hereditary Diseases.” Their primary task was to euthanize infants and young children with physical defects and disabilities. At first, this euthanasia was reserved for children under three years old. Later, the age continued to increase, and finally the scope was expanded to moless than seventeen years old. At the same time, in order to achieve overall racial improvement, the Nazis also sterilized adults with genetic defects. It's too difficult to sterilize something. The direct X-ray irradiation sterilization method is quite effective. Later, the Nazis thought it would be better to euthanize adults as well. Wouldn't it be more in-depth? In October 1939, the Nazis euthanized 75,000 people with genetic abnormalities. Maybe it was because he didn't find much cyanide, so he just killed him with a gun, regardless of his condition. Aryans with genetic defects were not the only ones in need of this kind of kindness and care. There are also Jews. Isn’t Jewish ancestry itself a genetic defect? So the Nazis provided this kind of benevolent care to the Jews...and the guiding ideologyof the Nazis was called racial hygiene, which can be considered a kind of positive eugenics. Here's the problem: do you think existing biotechnology has developed to the point where newborns can be pinched as much as they want? Until it is developed to this level, the so-called "human genetic improvement" can only be like the cultivation of animal and plant varieties. After mating and giving birth, those that are not qualified are killed.
The definition of genetic modification is relatively clear, but there does not appear to be a particularly strict definition of genetically modified foods. If your instructor thinks the two are different, I think it should be genetically modified foods, including genetically modified foods. Transgenics use molecular biology and cell biology methods to modify the properties of food.targeted manner, for example by making rice express vitamins to produce golden rice with a unique appearance. However, genetically modified foods are a broader concept, which generally refers to all methods of improving the original genes of foods, except modern foods. Besides transgenic means of biotechnology, this also includes the traditional hybridization, cell fusion, mutagenesis and other means. Genetic modification and traditional methods of food improvement are essentially the same. They both modify the genetic material of the food itself. They can therefore be collectively called genetic improvement of foods. It's just that traditional methods are very indiscriminate, ineffective and have a long cycle. The evolution of a "grain of wheat" and goat grass thousands of years ago to high yield wheatToday's development is the result of the continuous accumulation and improvement of plants. Genoa. Transgene is a directional transformation based on a deep understanding of specific biochemical processes. So the cycle is short, the efficiency is high, and the direction of transformation is clear. Judging from the question, you should have a degree in biology so that you can collect and organize other specific information yourself.