monophyletic
Used in reference to a taxonomic group containing all descendants of a single, often hypothetical, common ancestor, often characterised by one or more synapomorphies. A clade is a monophyletic group.
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Results for “monophyletic”
Ichthyological terms, not general ones.
clade
A group of organisms sharing homologous features, believed to have evolved from a common ancestor following the principles of cladistics; a monophyletic group; a grouping hypothesised on the basis of phylogenetic information.
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convergent evolution
Independant acquisition of the same biological trait in unrelated, monophyletic, lineages as a result of inhabiting similar environments or ecological niches.
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paraphyletic
In phylogenetics, a paraphyletic taxon is, loosely, an artificial grouping that does not include all descendants from the common ancestor of its members; monophyletic group from which one or more of clades is omitted in order to form an additional group.
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sister group
In cladistics, a monophyletic group more closely related to the group in question than any other, i.e., the closest outgroup. Sister groups normally share an immediate common ancestor.
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