A Level Biology Revision "Phylogeny and Phylogenetic Trees"

You can find all my A Level Biology videos fully indexed at www.freesciencelessons.co.uk/...
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
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Nick Hobgood, CC BY-SA 3.0 creativecommons.org/licenses/..., via Wikimedia Commons
Geranium
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Dominicus Johannes Bergsma, CC BY-SA 3.0 creativecommons.org/licenses/..., via Wikimedia Commons
Bacillus cereus
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Mogana Das Murtey and Patchamuthu Ramasamy, CC BY-SA 3.0 creativecommons.org/licenses/..., via Wikimedia Commons
Fungi
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Fungi, Belfast by Albert Bridge, CC BY-SA 2.0 creativecommons.org/licenses/..., via Wikimedia Commons
Amoeba
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Dalinda Bouraoui CC BY-SA 3.0 creativecommons.org/licenses/... , via Wikimedia Commons
Golden Hamster
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Adamjennison111 at English Wikipedia, CC BY-SA 3.0 creativecommons.org/licenses/b..., via Wikimedia Commons
Chinese hamster
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Tristanspotter, Public domain, via Wikimedia Commons
Prairie vole
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United States National Park Service, Public domain, via Wikimedia Commons
DiGangi Deermouse (prairie deer mouse)
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6th Happiness, CC BY-SA 3.0 creativecommons.org/licenses/..., via Wikimedia Commons
Brown Rat
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Dunpharlain, CC BY-SA 4.0 creativecommons.org/licenses/..., via Wikimedia Commons
House mouse
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Unknown authorUnknown author (original) / Ilmari Karonen (editing), Public domain, via Wikimedia Commons
Phylogenetic tree of rodentia (modified)
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M ralser, CC BY-SA 4.0 creativecommons.org/licenses/..., via Wikimedia Commons
Vulpes vulpes
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Joanne Redwood, CC0, via Wikimedia Commons
Border terrier
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Petteri Sulonen from Helsinki, Finland, CC BY 2.0 creativecommons.org/licenses/..., via Wikimedia Commons
Grey wolf
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User:Mas3cf, CC BY-SA 4.0 creativecommons.org/licenses/..., via Wikimedia Commons
Anthemis April 2009
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Alvesgaspar, CC BY-SA 3.0 creativecommons.org/licenses/..., via Wikimedia Commons
Glebionis February 2008
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Alvesgaspar, CC BY-SA 3.0 creativecommons.org/licenses/..., via Wikimedia Commons
Cichorium intybus alvesgaspar1
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Alvesgaspar, CC BY-SA 3.0 creativecommons.org/licenses/b..., via Wikimedia Commons

[@muhsinrashid4681]

GOAT

[@alexzay5174]

Hi Sir I've been watching your videos since I was preparing for IGCSE and did really well. Now, I'm here again to prepare A Level and Can you please make a playlist for A level Physics too? Your videos really helped me. Thank you Shaun!

[@yasminh]

he doesnt do physics bc I think his degree was biochem