09/04/2026
The evolutionary biologist Maurine Neiman uncovered a whole-genome duplication in a minuscule snail. “We actually don’t know, for our snails or any other species, why this happens so reliably, again and again and again,” she said.
Several decades ago, in the dry prairies of eastern Washington, Pam Soltis and Douglas Soltis began tracking a polyploidy event. They knew almost exactly when it had happened: Several species of a plant known as goatsbeard were brought to the United States from Europe in the mid-1920s. They hybridized, and before long, two new species emerged with 24 chromosomes — twice as many as the original species. By growing the plants from seed and studying their genomes, the Soltises could see what happens to cells in the immediate aftermath of genome duplication.
By doubling their entire genome, organisms can evolve extremely rapidly — or they can lose it all. New studies reveal how to survive the high-risk, high-reward evolutionary event.