Clade X
Clade X
Clade X (/klæd ɛks/) is a term used in phylogenetics to refer to a group of organisms that consists of a single common ancestor and all its lineal descendants. The term is derived from the Ancient Greek word klados, which means "branch".
Etymology
The term "clade" was introduced in 1957 by Julian Huxley, "X" is often used in the scientific community to refer to an unknown or variable factor. In the context of Clade X, it refers to any specific clade that is being studied or discussed.
Related Terms
- Phylogenetics: The study of the evolutionary history and relationships among individuals or groups of organisms.
- Monophyletic: A group of organisms that forms a clade.
- Paraphyletic: A group of organisms that includes an ancestor but not all of its descendants.
- Polyphyletic: A group of organisms that does not include the most recent common ancestor of all members of the group.
- Taxonomy: The science of defining and naming groups of biological organisms on the basis of shared characteristics.
See Also
External links
- Medical encyclopedia article on Clade X
- Wikipedia's article - Clade X
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