A Level Biology Revision "Phylogeny and Phylogenetic Trees"

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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