Phylogeny is the study of the evolutionary development and relationships among different species, often represented in the form of a phylogenetic tree. This discipline helps scientists understand how species evolve, adapt, and diverge over time through shared ancestry. By analyzing genetic, morphological, and behavioral traits, researchers can reconstruct the evolutionary history of organisms, providing insights into biodiversity and the mechanisms driving evolution. Phylogenetic studies are crucial for fields such as taxonomy, comparative biology, and conservation efforts, as they highlight the interconnectedness of life on Earth.