Latest Antonis Rokas Stories
These days, phylogeneticists – experts who painstakingly map the complex branches of the tree of life – suffer from an embarrassment of riches. The genomics revolution has given them mountains of DNA data that they can sift through to reconstruct the evolutionary history that connects all living beings.
Since the days of Darwin, the "tree of life" has been the preeminent metaphor for the process of evolution, reflecting the gradual branching and changing of individual species.
The unexpected discovery of a new type of genetic variation suggests that natural selection â€“ the force that drives evolution â€“ is both more powerful and more complex than scientists have thought.
The animal kingdom's family tree is beginning to look a little bushy.
- An uxorious, effeminate, or spiritless man.
- A timorous, cowardly fellow.