What is gene transfer technology?

Gene introduction technology is to inject foreign genes into sexual cells or embryos to improve the genome type of livestock and cultivate offspring with new traits. 1982, four laboratories in the United States injected the growth hormone gene of rats into the fertilized eggs of mice to cultivate transgenic mice. As a result, mice grow faster and weigh twice as much as before, so they are called "super mice". Its new features can also be passed on to future generations. 1983, researchers from Cambridge University in England successfully crossed goats with sheep for the first time. This goat has horns on its head and looks like a sheep, but like a mule, this goat can't reproduce. Scientists all over the world hope to use this technology to cultivate "super livestock" or some "micro animals" to meet people's different needs.