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∙ 6y agoSynapomorphies are important in systematics because they are shared derived characteristics that help scientists infer evolutionary relationships among organisms. By identifying synapomorphies, researchers can determine which species share a common ancestor and group them accordingly in a phylogenetic tree. This information is crucial for understanding the evolutionary history and patterns of biodiversity.
Scientists use the fossil record and structural and molecular comparisons to construct phylogenetic trees. This answer came straight from my freshman Biology book.
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the phylogenetic relationships between species of different phyla
Systematics
Systematics is the science dedicated to inventorying and describing biodiversity and understanding the phylogenetic relationships between organisms.
The answer depends on the time period, and what is meant by systematics. In it's broadest definition, the study of diversification in organisms and their relationships through time, I think that Carl Linnaeus is the most obvious contributor from early naturalists. Willi Hennig, German biologist, also comes to mind, for more recent phylogenetic systematics.
Xiaoming Wang has written: 'Phylogenetic systematics of the Hesperocyoninae (Carnivora:Canidae)' -- subject(s): Canidae, Fossil, Fossil Canidae, Paleontology
Aaron M. Bauer has written: 'Phylogenetic systematics and biogeography of the Carphodactylini (reptilia: Gekkonidae)' -- subject(s): Classification, Geckos, Geographical distribution
Phylogenetic classification groups animals based on their evolutionary relationships and genetic similarities. This form of classification organizes animals into groups based on their shared ancestry and common descent.
The science is called phylogenetics. It uses molecular data and morphology to study the evolutionary relationships and the patterns of descent among different organisms. Phylogenetic trees are commonly used to illustrate these relationships.
Phylogenetic
Systematics try to figure out their evolutionary relationships.
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Taxonomic
what is classical systamatics