Taxonomy: Life’s Filing System – Crash Course Biology #19

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Hank tells us the background story and explains the importance of the science of classifying living things, also known as taxonomy.

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References for this episode can be found in the Google document here:

Table of Contents
1) Taxonomy 0:00
2) Phylogenetic Tree 1:24
3) Biolography 2:26
4) Analogous/Homoplasic Traits 3:48
5) Homologous Traits 4:03
6) Taxa & Binomial Nomenclature 4:56
7) Domains 5:48
a) Bateria 6:04
b) Archaea 6:44
c) Eukarya / 4 Kingdoms 6:54
-Plantae 7:56
-Protista 8:23
-Fungi 8:56
-Animalia 9:31

taxonomy, classification, classifying, evolution, filing, science, biology, life, organism, relationship, ancestor, ancestry, evolutionary tree, phylogenetic tree, tree of life, biolography, carl von linnaeus, linnaeus, botanist, botanical name, morphology, homologous traits, systema naturae, taxa, groups, kingdom, phylum, class, order, family, genus, species, binomial nomenclature, latin, domain, archaea, eukarya, division, autotrophs, heterotrophs, protist, fungi, animalia, animal, cat, kitty Support CrashCourse on Subbable:


Hamoody Ayyoub says:

he's a nerd

Elle Cox says:

Dude, I love you lol!

Youssef Youssef says:

Views for these videos must skyrocket around this time every year.

Cameron Ness says:

this helped me a lot so I subed for the amazing work!

Refad Ahmed says:

absolutly useful… so nice xprssn

Meg Dickson says:

Maybe you should just stick to teaching cladistics and not outdated Linneaus stuff? Protista really isn't a thing anymore and it's not very useful…

Jonathan Caldwell says:

I love Hank's voice at the beginning

presentfixations says:

linnaeus insisting that lactation is the most important function of mammals (when only roughly half of any mammalian species lactates and even then not all of those who can do) was out of his distaste for urban european mothers who were starting to work in the then industrializing society, sending their infants to nurse in the countryside. the controversy was about men being upset about gender role and keeping women in the home, not whether nipples were contentious. linnaeus was a world class fuckboy (he also categorized humans by race in his taxonomic system, and gave generalized and stereotyped personalities and attributes to each race, putting white people on top) anw gotta love when ppl preach ab dead white men that contribute to oppression through their academia right! meninism really isnt a new concept friends

Pigmanpower says:

Why does everyone hate taxonomy, taxonomy is THE BEST THING EVER -signed, possible reincarnation of Linnaeus

maggie barnes says:

thank you for this amazing video! organismal biology test coming up!!

Lakshya Sinha says:

+CrashCourse thanks it kelped me a lot but can you help me with fungi kingdom as yeast are classified in two ways Rhizopus and Saccharomyces.

Mixer says:

This is how I chose to study for my biology test :)

rider guerrero says:

thank u sir! great lecture

morris shalom says:

the percentages of homozygous WW, homozygous ww and heterozygous Ww added up to over 100 though? how do you solve that if being asked to calculate the number of individuals with each genotype?

John Schatzl says:

dude ur a fag kys pls

Elyssa Yazid says:

Thank you for making this video. You made my homework just a little more interesting during this hazy day. Literally! It's hazy out here so stuck at home and even a sprained ankle.
Could you make a video about haze and it's effects on people. It sound a whole lot more fun than actually doing research. This is not to make my homework easier, promise. I'm actually curious…

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