What is the molecular clock? Levels of molecular variation could be used, in principle, to estimate divergence times, serving as evolutionary "clocks" that "tick" at different rates. Subsequent ...

Is there really such a molecular clock? If so, why? Can we use molecular clocks to date evolutionary events? After several decades of study, we have answers to some of these questions. More ...

Clock genes are almost a given when an organism ... Sondhi was seeing the process of evolution. “If this is functionally ...

For this article, Steve Bunk interviewed S. Blair Hedges, evolutionary biologist, Pennsylvania State University. Data from the Web of Science (ISI, Philadelphia) show that Hot Papers are cited 50 to ...

To solve the mystery, Kern and her team rewound the evolutionary clock a billion years to find Abl and Src’s common ancestor, a primitive protein in yeast they dubbed ANC-AS. They mapped out the ...