Viruses:Jeff Cox looks at viruses faced by three popular garden plants

摘要

WE THINK OF evolution as a slow process that occasionally advances by sudden leaps, like when a worthy mutation occurs that has evolutionary value and it is then passed along through the generations. And for ourselves and plants and animals roughly our size, it is indeed slow going. As a rule, though, the smaller the organism, the faster the reproductive rate and therefore the more chances for mutations.