Older DNA strands are preferentially sorted into stem cells when they self-renew (A). This segregates the DNA most recently replicated, and therefore most error-prone, into cells destined for ...

Frank Stahl, a professor emeritus of molecular biology, doesn’t teach classes at the University anymore, but every intro-level biology student knows him, at least through his work. Stahl was one half ...

Which books convey the excitement of the early years of molecular biology? Horace Freeland Judson's The Eighth Day of Creation published over twenty years ago succeeds as a vivid narrative, surveying ...

Consider, too, the research of two young postdocs — Matthew Meselson and Frank Stahl — in the years 1957–58, as they worked to find evidence for the semi-conservative form of DNA replication. Was this ...