Evidence of common descent refers to the traces left behind in living organisms that suggest a shared ancestry with a common ancestor. Synonyms for this phrase include signs of ancestral connection, indications of evolutionary relatedness, markers of shared descent, and hallmarks of lineage similarity. These terms highlight the idea that evolution is a process that unites all living organisms into a tree of life, with shared traits and characteristics that can be traced back through time. From genetic similarities to anatomical features, evidence of common descent underscores the universal interconnectedness of life on Earth, and serves as a powerful reminder of how much we all have in common.