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Learn about phylogenetic trees and their role in understanding evolutionary relationships on Khan Academy.
Learn about the logic behind phylogenetic trees and how to build a tree using data about features that are present or absent in a group of organisms.
Constructing a phylogenetic tree involves hypothesizing evolutionary relationships among species based on observable traits and genetic evidence. By practicing parsimony, we aim for the simplest explanation.
Test your knowledge of phylogenetic trees!
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Khan Academy. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Explore. Search. Donate. Log in Sign up.
Learn about the logic behind phylogenetic trees and how to build a tree using data about features that are present or absent in a group of organisms.
Learn about phylogenetic trees and how to interpret them to determine which species are most related.
The tree really has nothing to do with physical characteristics such as fur or number of legs. Because evolution allows lineages to change physiologically and anatomically, many pairs of species on earth are quite different.
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