The gamma spike model is a phylogenetic clock model for BEAST 2. This method tests for punctuated equilibrium, by assigning each branch a gradual clock-rate and an instaneaneous spike of abrupt ...

This valuable study presents a theoretical model of how punctuated mutations influence multistep adaptation, supported by empirical evidence from some TCGA cancer cohorts. This solid model points to ...

The rate of acquisition of genomic changes in cancer has been the topic of much discussion, with several recent investigations finding evidence of punctuated evolution instead of gradual accumulation ...

Travis Gettys is a senior editor for Raw Story based in northern Kentucky. He previously worked as a web editor for WLWT-TV and a contributing writer for the Kentucky Enquirer, and he also wrote for ...

Evolution is often thought of as a slow, creeping process. But when it comes to octopuses and squids, it seems nature works in quick, sharp bursts. Over the last 500 million years, nearly all the ...

Over the past 500 million years, nearly all evolutionary changes in octopuses and squids occurred in rapid bursts during the emergence of new species, according to research from the University of ...

A Pennsylvania judge has ruled that intelligent design is not fit for science classes. But I.D. remains rooted in U.S. schools, where science teachers are pressured to address God in the classroom.

A new study by researchers at the Max Planck Institute for Evolutionary Biology (MPI-EB) sheds fresh light on one of the most debated concepts in biology: evolvability. The work provides the first ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

History is often shaped by moments of profound change—inflection points that redefine what’s possible, much like cosmic asteroids that strike the planet and alter the course of evolution. Today, we ...