Gene editing technology, especially tools like CRISPR-Cas9, can indeed be used to modify the genome of an organism to give it specific characteristics, including certain lethal characteristics. However, creating organisms with specific lethal characteristics involves many ethical, legal and safety issues. From a scientific point of view, gene editing can be used to change the physiological characteristics of organisms, such as disease resistance, lifespan or growth rate. But deliberately creating organisms with lethal characteristics may bring unforeseen ecological impacts and biosafety issues. In many countries and regions, research and applications on gene editing are strictly regulated, especially those involving humans and ecosystems. Researchers and ethicists generally believe that before conducting such experiments, the potential consequences must be carefully considered and ensure compliance with relevant laws, regulations and ethical standards. In short, although technically feasible, such experiments must be carefully considered and strictly reviewed in human society.