Animal Phylogeny | Introduction to Animal Diversity | Unit 5. Biological Diversity

Описание: Chapter: Animal Phylogeny
Collection: Introduction to Animal Diversity
Unit 5. Biological Diversity
Book: Biology


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Scientists are interested in the evolutionary history of animals and the evolutionary relationships among them. There are three main sources of data that scientists use to create phylogenetic evolutionary tree diagrams that illustrate such relationships: morphological information (which includes developmental morphologies), fossil record data, and, most recently, molecular data. The details of the modern phylogenetic tree change frequently as new data are gathered, and molecular data has recently contributed to many substantial modifications of the understanding of relationships between animal phyla.


00:00 Animal Phylogeny
01:43 Constructing an animal phylogenetic tree
03:36 Modern advances in phylogenetic understanding come from molecular analyses
06:59 Section summary

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