Franklin W. Stahl, an American molecular biologist whose landmark 1957-58 experiment with colleague Matthew Meselson revealed how DNA replicates, helping pave the way for a revolution in genetics ...

During DNA replication, the classic double helix can temporarily rearrange into an alternative structure known as a DNA three ...

The DNA packed inside every human cell contains instructions for life, written in billions of letters of genetic code. Every time a cell divides, the complete code, divided among 46 chromosomes, must ...

Scientists have built a microscope capable of visualizing optical responses at the scale of individual atoms, redefining the ...

DNA evidence preserved on a microscope slide after a 1956 double homicide and the use of forensic genealogy helped a Montana sheriff's office close the books on the 65-year-old cold ...

By creating a more true-to-life representation of DNA's environment, researchers at Northwestern University have discovered that strand separation—the essential process a "resting" double helix ...

Various DNA repair systems exist, such as base excision repair, nucleotide excision repair, mismatch repair, single-strand or double-strand break repair.