Skip to main content
뒤로

Building Phylogenetic Trees definitions

컨트롤 버튼이 '내비게이션' 모드로 변경되었습니다.
1/15
  • Phylogenetic Tree
    Diagram showing evolutionary relationships among organisms, with branches representing lineage splits based on shared traits.
  • Shared Derived Character
    Trait present in multiple taxa but absent in the outgroup, indicating recent common ancestry within the group.
  • Shared Ancestral Character
    Trait inherited from a distant ancestor, present in both ingroup and outgroup, offering little insight into recent relationships.
  • Character Matrix
    Table listing taxa and their traits, used to identify patterns of shared derived characters for tree construction.
  • Ingroup
    Set of taxa under study whose evolutionary relationships are being determined within a phylogenetic analysis.
  • Outgroup
    Taxon outside the ingroup, used as a reference point to distinguish ancestral from derived traits.
  • Homologous Trait
    Feature inherited from a common ancestor, supporting evolutionary connections among taxa.
  • Analogous Trait
    Feature with similar function or appearance in different taxa, not inherited from a common ancestor.
  • Parsimony
    Principle favoring the simplest evolutionary explanation with the fewest character state changes.
  • Sister Taxa
    Two groups sharing the most recent common ancestor, identified by the highest number of shared derived traits.
  • Root
    Base of a phylogenetic tree, representing the most recent common ancestor of all included taxa.
  • Character State
    Specific form or condition of a trait, such as presence or absence, used to compare taxa.
  • Maximum Likelihood
    Statistical method evaluating which evolutionary tree is most probable, considering the likelihood of different changes.
  • Node
    Branching point on a phylogenetic tree, representing a common ancestor from which descendant taxa diverge.
  • Taxon
    Any named group of organisms, such as species or families, used in phylogenetic analysis.