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 ...

This video segment adapted from NOVA scienceNOW examines the realm of personal DNA testing. It describes the latest tests, which look for single-nucleotide polymorphisms (SNPs). These single-letter ...

The 50th anniversary of the discovery of DNA's double helix structure is being observed this year. Perhaps heightening the celebration is the fact that James Watson, Francis Crick and Maurice Wilkins, ...