Long interspersed nuclear element-1 (LINE-1 or L1) is the only active, self-copying genetic element in the human genome—comprising about 17% of the genome. It is commonly called a "jumping gene" or ...
To celebrate the start of the school year in the US, Google featured a Doodle highlighting DNA chemistry on Sept. 10, 2025. The doodle itself features a rotating double helix; guanine, which is one of ...