DNA weaves together the tapestry of life on Earth. It mutates, which can lead to variation among organisms. Watch how natural selection relies on DNA to mold organisms to suit their environments.
PBS Learning Virtual Professional Learning Series is created for teachers—by teachers—to bring together content experts and educators from all backgrounds. With an emphasis on fun, engaging, accessible, and free tools for classrooms, these bite-sized opportunities are designed to connect educators with each other and PBS shows, themes, and content.