Concept
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Web, Network, and Ring of Life Models
![Phylogenetic web of life model](../../../../../../../../../figures.boundless-cdn.com/19062/full/figure-20-03-05.jpeg)
Phylogenetic web of life model
In the (a) phylogenetic model proposed by W. Ford Doolittle, the "tree of life" arose from a community of ancestral cells, has multiple trunks, and has connections between branches where horizontal gene transfer has occurred. Visually, this concept is better represented by (b) the multi-trunked Ficus than by the single trunk of the oak, similar to the tree drawn by Darwin.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Perspectives on the Phylogenetic Tree. October 16, 2013."
http://cnx.org/content/m44593/latest/Figure_20_03_05.jpg
OpenStax CNX
CC BY 3.0.