The history of life on Earth is a tale of slow burns and sudden explosions, shaped by environmental upheavals and evolutionary resilience. Researchers at Virginia Tech have traced the evolution of ...

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 ...

Evolution is often thought of as a process that takes millions of years, but that's not always the case. Single-celled organisms, in particular, ride an evolutionary fast track. Within weeks, a ...

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 ...

To understand evolution, humans must think in much larger units of time than those we use to define our lives. After all, evolutionary change isn't apparent in days, months, or years. Instead ...

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