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This interactive web resource allows you to follow any branch on the tree of life to find out how scientists hypothesize all the species on Earth (plus some extinct lineages) are related to one another.
This resource appears at the Tree of Life website.
Tree of Life
Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details.
- Present-day species evolved from earlier species; the relatedness of organisms is the result of common ancestry.
- Evolutionary trees (i.e., phylogenies or cladograms) portray hypotheses about evolutionary relationships.