This narrated animation illustrates the process of protein synthesis, starting with chromosomal DNA inside the cell's nucleus. A gene is transcribed into messenger RNA, which leaves the nucleus and ...

In a giant feat of genetic engineering, scientists have created bacteria that make proteins in a radically different way than all natural species do. By Carl Zimmer At the heart of all life is a code.

Scientists in San Diego have achieved a major goal in the effort to craft artificial organisms: A microbe whose genetic material included some lab-made instructions was able to live, reproduce and ...