Which term refers to the discipline that studies relationships among species using data from multiple sources?

Which term refers to the discipline that studies relationships among species using data from multiple sources?

• A. Population genetics
• B. Comparative anatomy
• C. Pedigree
• D. Phylogenetics

Answer: (D)

Phylogenetics is the field that studies how species are related by combining evidence from multiple sources—such as DNA sequences, physical traits, and fossil records—to infer evolutionary relationships and build diagrams that show how lineages diverged over time. This integrative approach lets us uncover patterns of descent and relatedness across species, not just within a single population or a single type of data. Population genetics tends to focus on variation and evolution within and between populations of the same species, not on cross-species relationships using diverse data. Comparative anatomy examines anatomical similarities and differences to infer ancestry but usually centers on anatomy rather than multiple data streams across many species. Pedigree analysis tracks inheritance within families, not relationships among species.

Phylogenetics is the field that studies how species are related by combining evidence from multiple sources—such as DNA sequences, physical traits, and fossil records—to infer evolutionary relationships and build diagrams that show how lineages diverged over time. This integrative approach lets us uncover patterns of descent and relatedness across species, not just within a single population or a single type of data. Population genetics tends to focus on variation and evolution within and between populations of the same species, not on cross-species relationships using diverse data. Comparative anatomy examines anatomical similarities and differences to infer ancestry but usually centers on anatomy rather than multiple data streams across many species. Pedigree analysis tracks inheritance within families, not relationships among species.