For the first time, scientists have witnessed the very moment DNA begins to unravel, revealing a necessary molecular event ...

As previously mentioned, the location at which a DNA strand begins to unwind into two ... and elongation are understood in the most basic sense, but many questions remain unanswered, particularly ...

Promoter sequences define the direction of transcription and indicate which DNA strand will be transcribed; this strand is known as the sense strand. Many eukaryotic genes have a conserved ...

Sunburns and aging skin are obvious effects of exposure to harmful UV rays, tobacco smoke and other carcinogens. But the effects aren't just skin deep. Inside the body, DNA is literally being torn ...

Researchers begin with a long strand of DNA, the scaffold ... "We just add these simple molecules to the system, and it's ready to sense something different," Guareschi says.

Most dividing cells in the body have well-defined checkpoint mechanisms to sense and ... to measure the DNA repair capacity, repair protein expression profiles, and double-strand break levels ...