A study compared genetic features of nematodes that reproduce asexually or sexually. They found that asexual nematodes have slightly lower mutation rates and higher genetic diversity. Asexual populations also showed more genetic differences despite having a common ancestor. The triploid asexual nematodes had higher heterozygosity due to having an extra genome copy, which may help them avoid accumulating harmful mutations. These findings challenge common beliefs about evolution in asexual organisms.