Across many scales of life, the rate of evolutionary change is often accelerated at the time when one lineage splits into two.
![Phylogenies inferred under the gradual+abrupt clock model. The three-point estimates summarize their respective tree posterior distributions using the conditional clade distribution 0 method [57]. Median estimates of branch spike sums are shown. -- Proceedings of the Royal Society B](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/06/Evolution-Is-Coupled-With-Branching.png?resize=1200%2C720&ssl=1)
Across many scales of life, the rate of evolutionary change is often accelerated at the time when one lineage splits into two.