http://www.statnews.com/2015/11/12/gene ... rror-risk/
Gene drive is a molecular technique that slips a new gene into an organism and guarantees that it will be inherited by offspring and by subsequent generations. That’s possible because gene drive not only introduces a new gene but destroys competitors of that gene. Result: even if the genetically engineered organism mates with a partner carrying a different version of the gene, all of their descendants will carry the engineered gene and express the associated trait.
With gene drives, he said in a telephone interview, it might be possible to introduce a toxin-making gene into the salivary glands of malarial mosquitoes so that when they bite they transmit not only that disease but also something quickly lethal. The trait would quickly spread to countless mosquitoes. Or perhaps gene drives could make insects “more hospitable” to dengue or other disease-causing viruses, Adalja speculated, or enable them to expand their range, bringing malaria and other scourges to regions far from the tropics.