What does basal (phylogenetics) mean?
Definitions for basal (phylogenetics)
basal (phy·lo·ge·netics)
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Wikipedia
Basal (phylogenetics)
In phylogenetics, basal is the direction of the base (or root) of a rooted phylogenetic tree or cladogram. The term may be more strictly applied only to nodes adjacent to the root, or more loosely applied to nodes regarded as being close to the root. Note that extant taxa that lie on branches connecting directly to the root are not more closely related to the root than any other extant taxa.While there must always be two or more equally "basal" clades sprouting from the root of every cladogram, those clades may differ widely in taxonomic rank, species diversity, or both. If C is a basal clade within D that has the lowest rank of all basal clades within D, C may be described as the basal taxon of that rank within D. The concept of a 'key innovation' implies some degree of correlation between evolutionary innovation and diversification. However, such a correlation does not make a given case predicable, so ancestral characters should not be imputed to the members of a less species-rich basal clade without additional evidence.In general, clade A is more basal than clade B if B is a subgroup of the sister group of A or of A itself. Within large groups, "basal" may be used loosely to mean 'closer to the root than the great majority of', and in this context terminology such as "very basal" may arise. A 'core clade' is a clade representing all but the basal clade(s) of lowest rank within a larger clade; e.g., core eudicots. Of course, no extant taxon is closer to the root than any other, by definition.
Numerology
Chaldean Numerology
The numerical value of basal (phylogenetics) in Chaldean Numerology is: 9
Pythagorean Numerology
The numerical value of basal (phylogenetics) in Pythagorean Numerology is: 4
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"basal (phylogenetics)." Definitions.net. STANDS4 LLC, 2024. Web. 27 Apr. 2024. <https://www.definitions.net/definition/basal+%28phylogenetics%29>.
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