Scientists have created a genetically modified mosquito that could help decrease the spread of dengue-transmitting wild mosquitoes. The GM mosquitoes carry a gene that prevents female mosquitoes from flying or biting, so they die soon after birth. Male mosquitoes would carry the gene and pass it on to offspring, thus ensuring the gene's survival. Before researchers can release the insects, they'll need to prove that the mosquitoes would actually have an effect in natural habitats, as well as whether the reduction of dengue-carrying mosquitoes would actually stem the spread of the fever.
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