Phylogenetics is the study of the evolutionary relationships between different species or groups of organisms. It involves analyzing genetic, morphological, and behavioral data to reconstruct the evolutionary history of a particular group of organisms and to infer the relatedness between different species. Phylogenetic trees, or diagrams, are commonly used to represent these relationships, showing how different species have evolved from a common ancestor over time. This field of study is crucial for understanding the diversity of life on Earth and for making inferences about the evolutionary processes that have shaped it.