Course Hero Logo

Using a phylogeny it is easy to tell if a group of

Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. This preview shows page 8 - 11 out of 19 pages.

Using a phylogeny, it is easy to tell if a group of taxa forms amonophyletic clade or not.Imagine clipping a branch of thephylogenetic tree: if a group of taxa can be separated from the rest ofthe tree with a single clipping, they make up a monophyletic clade. Ifyou need more than one clipping to separate that group of taxa fromthe rest of the tree, they do not form a monophyletic clade:
In the example above, species D, E and F form a monophyletic clade,so it makes sense to group them together in a taxonomic group (theyshare a common ancestor, and it reveals something about theirphylogenetic history).Taxonomists are currently splitting the 'protists' in several newkingdoms that represent monophyletic groups. Let's help them!Splitthe protists into new taxonomic groups that representmonophyletic clades. To help you, I have listed below the protisttaxa as they appear in the tree, from left to right:oDinoflagellatesoApicomplexansoCiliatesoOomycetesoDiatomsoBrown algaeoRadiolariansoForaminiferansoCercozoaoRhodophytaoDiplomonadsoParabasalidsoEuglonozoansoAmoebozoansoChoanoflagellates*Important question:Why is the Kingdom protist an artificialgrouping?
Organisms traditionally called protists do not share a commonancestor that is also not shared with other non-protist organisms.Some protists are more closely related to plants, or to animals, or tofungi, than to other protists.Themost recent common ancestor of all protists is also the mostrecent common ancestor of all eukaryotes.
POST-CLASS QUIZ: PROTISTA PHYLOGENY AND DIVERSITYQUESTION 1Protista is a taxonomic designation for organisms that can be foundwhere in a phylogeny of all life?

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 19 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Spring
Professor
Fleury

Newly uploaded documents

Show More

Newly uploaded documents

Show More

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture