Author: Freesciencelessons via YouTube
Go to Source

In this video, we look at phylogeny and phylogenetic trees. First we explore what is meant by phylogeny. We then look at how to interpret a phylogenetic tree, including what is meant by a node and sister groups. Finally, we look at the benefits of phylogeny over taxonomic classification.

Image credits:

Clownfish
https://commons.wikimedia.org/wiki/File:Amphiprion_ocellaris_(Clown_anemonefish)_by_Nick_Hobgood.jpg
Nick Hobgood, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Geranium
https://commons.wikimedia.org/wiki/File:Geranium_02.JPG
Dominicus Johannes Bergsma, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Bacillus cereus
https://commons.wikimedia.org/wiki/File:Bacillus_cereus_SEM-cr.jpg
Mogana Das Murtey and Patchamuthu Ramasamy, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Fungi
https://commons.wikimedia.org/wiki/File:Fungi,_Belfast_-_geograph.org.uk_-_3668913.jpg
Fungi, Belfast by Albert Bridge, CC BY-SA 2.0 https://creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons

Amoeba
https://commons.wikimedia.org/wiki/File:Collection_Penard_MHNG_Specimen_18-1-4_Amoeba_granulosa.tif#file
Dalinda Bouraoui CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0/deed.en , via Wikimedia Commons

Golden Hamster
https://commons.wikimedia.org/wiki/File:Golden_hamster_front_1.jpg
Adamjennison111 at English Wikipedia, CC BY-SA 3.0 http://creativecommons.org/licenses/by-sa/3.0/, via Wikimedia Commons

Chinese hamster
https://commons.wikimedia.org/wiki/File:Chinesedsaffa.jpg
Tristanspotter, Public domain, via Wikimedia Commons

Prairie vole
https://commons.wikimedia.org/wiki/File:Prairie_vole.gif
United States National Park Service, Public domain, via Wikimedia Commons

DiGangi Deermouse (prairie deer mouse)
https://commons.wikimedia.org/wiki/File:DiGangi-Deermouse.jpg
6th Happiness, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Brown Rat
https://commons.wikimedia.org/wiki/File:Brown_Rat_(Rattus_norvegicus).jpg
Dunpharlain, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

House mouse
https://commons.wikimedia.org/wiki/File:Mouse_white_background.jpg
Unknown authorUnknown author (original) / Ilmari Karonen (editing), Public domain, via Wikimedia Commons

Phylogenetic tree of rodentia (modified)
https://commons.wikimedia.org/wiki/File:Phylogenetic_Tree_of_Rodentia.jpg
M ralser, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Vulpes vulpes
https://commons.wikimedia.org/wiki/File:Vulpes_vulpes_ssp_fulvus.jpg
Joanne Redwood, CC0, via Wikimedia Commons

Border terrier
https://commons.wikimedia.org/wiki/File:Border_Terrier_Kamu.jpg
Petteri Sulonen from Helsinki, Finland, CC BY 2.0 https://creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Grey wolf
https://commons.wikimedia.org/wiki/File:Eurasian_wolf_2.jpg
User:Mas3cf, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Anthemis April 2009
https://commons.wikimedia.org/wiki/File:Anthemis_April_2009-1.jpg
Alvesgaspar, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Glebionis February 2008
https://commons.wikimedia.org/wiki/File:Glebionis_February_2008-1.jpg
Alvesgaspar, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Cichorium intybus alvesgaspar1
https://commons.wikimedia.org/wiki/File:Cichorium_intybus-alvesgaspar1.jpg
Alvesgaspar, CC BY-SA 3.0 http://creativecommons.org/licenses/by-sa/3.0/, via Wikimedia Commons

Go to Source