The Pol-theta enzyme (blue) joins two parts of a broken DNA strand (yellow). This process is mutagenic and can give rise to cancer. LA JOLLA, CA—DNA repair proteins act like the body’s editors, ...

DNA isn’t just a long string of genetic code, but an intricate 3D structure folded inside each cell. That means the tools used to study DNA need to be just as sophisticated—able to read not only the ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. DNA tests can tell people where in the world their ancestors came from, and if they're at risk of ...