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A tree structure, tree diagram, or tree model is a way of representing the hierarchical nature of a structure in a graphical form. It is named a "tree structure" because the classic representation resembles a tree, although the chart is generally upside down compared to a biological tree, with the "stem" at the top and the "leaves" at the ...
In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable as lumber or plants above a specified height.
The green and blue subgroups together form a clade. In biological phylogenetics, a clade (from Ancient Greek κλάδος (kládos) 'branch'), also known as a monophyletic group or natural group, [ 1] is a grouping of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic ...
Category. v. t. e. A phylogenetic tree, phylogeny or evolutionary tree is a graphical representation which shows the evolutionary history between a set of species or taxa during a specific time. [ 1][ 2] In other words, it is a branching diagram or a tree showing the evolutionary relationships among various biological species or other entities ...
The term paraphyly, or paraphyletic, derives from the two Ancient Greek words παρά ( pará ), meaning "beside, near", and φῦλον ( phûlon ), meaning "genus, species", [ 2 ][ 3 ] and refers to the situation in which one or several monophyletic subgroups of organisms (e.g., genera, species) are left apart from all other descendants of a ...
Genogram. A genogram, also known as a family diagram, [1] [2] is a pictorial display of a person's position in their family's hereditary and ongoing relationships. It goes beyond a traditional family tree by allowing the user to visualize social patterns and psychological factors that punctuate relationships, especially patterns that repeat ...
t. e. In biology, phylogenetics ( / ˌfaɪloʊdʒəˈnɛtɪks, - lə -/) [ 1][ 2][ 3] is the study of the evolutionary history and relationships among or within groups of organisms. These relationships are determined by phylogenetic inference, methods that focus on observed heritable traits, such as DNA sequences, protein amino acid sequences ...
Critical thinking is the analysis of available facts, evidence, observations, and arguments in order to form a judgement by the application of rational, skeptical, and unbiased analyses and evaluation. [1]
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