Do phylogenetic trees change?

Since there are always gaps in the fossil record, scientists use the best evidence available at the time to infer the relationships between species; this is why a phylogenetic tree is really just a hypothesis, or the "best explanation," for how we think a group of species are related. A phylogenetic tree may change, for instance, if new species are discovered and need to be added, or if new evidence reveals that the species already "in the tree" are related differently from that shown.

Indeed, as new information becomes available or as scientific knowledge advances, phylogenetic trees may alter.

Yes, phylogenetic trees can change over time. As new genetic data becomes available or as analytical methods improve, scientists may revise or refine existing phylogenetic trees. Additionally, interpretations of relationships among species can evolve based on new discoveries or reevaluations of existing evidence. Therefore, phylogenetic trees are subject to change as our understanding of evolutionary relationships deepens.