Clade

• Clade

  • In biology, a clade is a group made up of one common ancestor and all of its descendants. Biologists also call it a monophyletic group.[1]

  • Origin

    • From Ancient Greek kládos, "shoot, branch". The biologist Julian Huxley coined the word in 1957, in the Nature paper "The Three Types of Evolutionary Process".[1] [2]

  • How clades work

    • Clades nest inside one another, because each branch of the tree of life splits into smaller branches.[1]
    • A group that leaves out some descendants of its common ancestor is paraphyletic. The traditional class Reptilia is the usual example: it holds the last common ancestor of reptiles and its descendants, except the birds.[3]
    • Clades are the basic unit of cladistics, the approach to taxonomy that most fields of biology now use.[1]

  • In this garden

    • In the entity system described on Logseq/Entity, the clade of Logseq/Entity/Person would be Person together with every entity that is a kind of person, such as Logseq/Entity/Person/Maker/Music and Logseq/Entity/Person/Knowledge Gardener. In Logseq/Entity/Hierarchy/Discussion/Analysis/Opus/26/10/01/0611 ET Mark each page with the most specific entity in each lineage, Claude Opus recommends lineage for the chain that runs the other way, from Musician up to Person.

  • [1] https://en.wikipedia.org/wiki/Clade

  • [2] https://en.wiktionary.org/wiki/clade

  • [3] https://en.wikipedia.org/wiki/Paraphyly