Key points: A phylogenetic tree is a diagram that represents evolutionary relationships among organisms. Phylogenetic trees are hypotheses, not definitive facts. The pattern of branching in a …

Khan Academy Sign up

Oops. Something went wrong. Please try again. Uh oh, it looks like we ran into an error. You need to refresh. If this problem persists, tell us.

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.

To create a phylogenetic tree, scientists often compare and analyze many characteristics of the species or other groups involved. Although this may include internal and external physical traits, it can also …

Khan Academy ... Khan Academy

Key points: Phylogenetic trees represent hypotheses about the evolutionary relationships among a group of organisms. A phylogenetic tree may be built using morphological (body shape), …

Learn about phylogenetic trees, their structure, and how they represent evolutionary relationships among species in this comprehensive Khan Academy article.

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 …

A phylogenetic tree, also known as a cladogram, is a diagram that shows how different living things are related. Phylogenetic trees may show the relationships between species or between larger groups.