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     • Sister taxa or sister groups are pairs of terminal taxa and/or clades that branch from a common node and are often considered closely related.
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     2.1 Reading Trees - Digital Atlas of Ancient Life

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   Which clade is sister to a terminal taxa?

   • Pairs of sister terminal taxa in the figure above include: B and C, E and F, and G and H. The clade defined by Node 3 (Node 3 + Taxon E + Taxon F) is sister to the clade defined by Node 4 (Node 4 + Taxon G + Taxon H).

   2.1 Reading Trees - Digital Atlas of Ancient Life

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   What is a sister group phylogeny?

   • (sometimes called sister taxa) Clades that are each other’s closest relatives. On a phylogeny, sister groups occur anytime a single ancestral lineage gives rise to two daughter lineages: the daughter lineages are sister groups, and since they arose from the same ancestor at the same time, sister groups are always the same age.

   sister groups - Understanding Evolution

   evolution.berkeley.edu/glossary/sister-groups/

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   What is a taxonomic classification system?

   • The taxonomic classification system (also called the Linnaean system after its inventor, Carl Linnaeus, a Swedish botanist, zoologist, and physician) uses a hierarchical model. Moving from the point of origin, the groups become more specific, until one branch ends as a single species.

   12.5: Phylogenetic Trees - Biology LibreTexts

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   What is a terminal taxa in a phylogenetic tree?

   • Regardless of their rank, the taxa depicted in a phylogenetic tree are often called terminal taxa, because they occur at the tips of the tree. They are sometimes referred to as "terminals" or "leaves." Terminal taxa are connected by branches. The branches are the line segments that make up the tree.

   2.1 Reading Trees - Digital Atlas of Ancient Life

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3. www.digitalatlasofancientlife.org › learn2.1 Reading Trees - Digital Atlas of Ancient Life

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   Sister taxa or sister groups are pairs of terminal taxa and/or clades that branch from a common node and are often considered closely related. Pairs of sister terminal taxa in the figure above include: B and C, E and F, and G and H.

4. evolution.berkeley.edu › glossary › sister-groupssister groups - Understanding Evolution

   evolution.berkeley.edu › glossary › sister-groups

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   sister groups (sometimes called sister taxa) Clades that are each other’s closest relatives. On a phylogeny, sister groups occur anytime a single ancestral lineage gives rise to two daughter lineages: the daughter lineages are sister groups, and since they arose from the same ancestor at the same time, sister groups are always the same age.

5. bio.libretexts.org › Workbench › General_Biology_I4.4.2: Phylogeny and Cladistics - Biology LibreTexts

   bio.libretexts.org › Workbench › General_Biology_I

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   When two lineages stem from the same node, they are called sister taxa. A node with more than two lineages is called a polytomy and serves to illustrate where scientists have not definitively determined all relationships.

6. bio.libretexts.org › Courses › Lumen_Learning12.5: Phylogenetic Trees - Biology LibreTexts

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   Jul 30, 2022 · When two lineages stem from the same branch point, they are called sister taxa. A branch with more than two lineages is called a polytomy and serves to illustrate where scientists have not definitively determined all of the relationships.

7. courses.lumenlearning.com › wm-biology1 › chapterStructure of Phylogenetic Trees | Biology for Majors I

   courses.lumenlearning.com › wm-biology1 › chapter

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   When two lineages stem from the same branch point, they are called sister taxa. A branch with more than two lineages is called a polytomy and serves to illustrate where scientists have not definitively determined all of the relationships.

8. courses.lumenlearning.com › phylogenetic-trees-2Phylogenetic Trees | Biology for Majors II - Lumen Learning

   courses.lumenlearning.com › phylogenetic-trees-2

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   When two lineages stem from the same branch point, they are called sister taxa. A branch with more than two lineages is called a polytomy and serves to illustrate where scientists have not definitively determined all of the relationships.

9. oertx.highered.texas.gov › courseware › lessonBiology, Evolutionary Processes, Phylogenies and the History ...

   oertx.highered.texas.gov › courseware › lesson

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   When two lineages stem from the same branch point, they are called sister taxa. A branch with more than two lineages is called a polytomy and serves to illustrate where scientists have not definitively determined all of the relationships.