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Gene drives promise to spread a trait across an entire population. But evolutionary forces are going to alter even the best-engineered plans.
A new study reveals that individual genes can create many different versions of the molecular machinery that powers the cell.
Scientists have created a synthetic organism that possesses only the genes it needs to survive. But they have no idea what roughly a third of those genes do.
The biologist Sean B. Carroll rediscovers the scientific thrill of an unexpected revelation.
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