phylogenetics
Phylogenetics is the study of evolutionary relationships among organisms using DNA sequences, protein data, and physical traits to reconstruct their shared ancestry. In plant science, it provides a framework for understanding how major lineages diverged over hundreds of millions of years, revealing the origins of key innovations like seeds, flowers, and vascular tissue. These evolutionary trees help researchers classify plant diversity, trace the spread of traits across lineages, and inform conservation priorities.
open_in_new WikipediaPubMed · 2026-05-08
Scientists have failed for 40 years to determine how the major groups of seed plants are related to one another. This study argues that 'surviving ancestors' — ancient lineages still alive today — are causing the confusion, and proposes two new diagram types to break the longstanding evolutionary deadlock.
Forty years of phylogenetic analysis have failed to resolve the evolutionary relationships among the five major groups of living seed plants
Surviving ancestors — ancient lineages that gave rise to descendants without going extinct — produce 'hard polytomies' (multiple simultaneous branches) that standard cladogram methods cannot accurately represent
Simulated ancestor experiments confirmed that network visualization tools can detect the signature of surviving ancestors in morphological data matrices, pointing toward a methodological path forward
