Taxonomy and the Tree of Life
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- เผยแพร่เมื่อ 28 มิ.ย. 2024
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The science of taxonomy and where humans fit into the tree of life
More free lessons at: www.khanacademy.org/video?v=oH...
Khan is one of my favourite people. I have so much affection for that man.
This is an older classification system, the current classification heavily relies on DNA comparison (phylogenetic classification). We do not compare with our eyes (physical features) anymore, rather we compare the DNA code.
Thankyou so much! These videos help me a lot! Hope you make more videos for the 8th and 9th graders! Thanks a lot!
Thanks a lot for the Biology course! Very helpful.
...HOW DO YOU WRITE SO WELL WITH YOUR MOUSE? D;
he uses one of those pen mice
He's probably using a tablet
Very nice. Learning the facts of Evolution is always thrilling
You guys explain like a kinder garden student would even understand!😃
I've learnt it as - Kingdom, Phylum, Order, Class, Family, Genus and Specie (is that similar to the Tribe like Genus)...I guess in the UK it's different :/ Not sure... But love your videos :) Really helped me on Unit 1 - Got my unit 2 exam on Monday - eek! :P
I hope you did well
Kahn Academy on 60 minutes, tic tok...must have been an amazing experience ...nice job getting this far... hope you go higher Good Luck!!!
They're connected into the society of wealth and money,of coarse they will succeed.
thanks for the amazing video
Can you make a video on how to draw phylogenetic trees given some example species?
im impatiently waiting for the new video to come out !!:))PLEASE!!!
M following this channel from my 9th Std
Hi, I liked this video
Can any tell me if this was helpful for the DAT? The entire course? I read Cliff's AP Biology 3rd Edition, but now i want to visualize and have someone reteach to me.
Im wondering what kind of app and dispositive you are using to do your presentations. Could you help me please? :)
Very nice, thanks
I think the best way to classify species would be by whether or not they can interbreed. It wouldn't be quite that simple, but it would be far less arbitrary. I know there are ring species and species which interbreed in the wild on rare occasions, also some that only interbreed in captivity, but I don't think all of that would be a problem. I think it just proves that objectively species aren't a fixed group but actually form a continuum of compatible genetics.
that is one of the questions being explored.
@mmjdodd what is a clade? I hear that often but never understood where it fits into this older taxonomy classification. Let alone a newer version of it!
Gorilini sounds like a pasta
can i get a video on 5 kingdom classification....full detailed...please
@spinynorman1982 A clade is a general term for an encompassing group in the tree of life. For example, at a very high level, animal is a clade, as are Plant and Fungi. Going a bit lower within the animal clade, chordate is a clade, mollusc is a clade and arthropod is a clade. Each clade can be broken down into smaller clades until you get to individual species.
Thanks😊
Intresting
@armpitpuncher So a clade is kind of like an all encompassing classification on each branch of the tree of life. Regardless of it's current classification of "order" or "kingdom"? All these classifications are under the umbrella term of clade?
what program do you use?
could you train an ai program to classify species? would it be more accurate than people?
Eh I guess it's the same thing, but had my exam today, and litearlly hardly ANYTHING came up on Classification :/ Sucks... i.e. "what is found between Order and Genus -_-"
Great
Cool. :)
@Kinggenton how's the documentary called?
with khan academy :D
@spinynorman1982 Yes, exactly. The problem with having an individual name for each group level, like Linnaeus did with his kingdom, phylum, etc, is that there are countless other levels in between those. So people started coming up with silly words like superorder, suborder, infraorder and parvorder for levels above and below. It's overkill on some of the branches, and on others, it's not nearly enough. So best just to do away with all that.
This guy is sooo fkin healpful!!
Just in case anybody is curious, AronRa(YT Channel) is an internet personality that has a tremendous amount of entertaining and easily digestible videos about evolution, almost all of them are at the expense of creationists, but learning in general usually is at their expense. lol
DNA comparison is supirior in many cases, but not in every case! :)
Will you make a video about Biodiversity.
you mean evolution?
@KillaNinja0 I knew someone was going to say that before finishing the video.
LOL...it's difficult to tell sometimes :-)
Hie guys do any of you know any channel that provides videos based on igcse biology im writing may june 2017 so i really need help
www.google.com.eg/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=igcse+biology&tbm=vid
Linnaenus? Isn't the name Carl Von Linne? That's what I had learned in my biology class.
To watch this video on the actual site and view over 4,000 educational videos, visit Khan Academy (.org)
I'm trying. It just feels like we're trying to convince ourselves of this. I get as far as the adaptation but it's too much of a stretch for me to be legitimately satisfied in this macroevolution theory. I want to learn for the sake of understanding the current accepted standard for my biology degree but I'm just not able to truly commit to this fully. Am I the only one who feels this way deep down??
It's an well proven fact wether you like it or not . People believing in flat earth . Won't change the fact that earth is spherical
During Darwin's life, he found much evidence to support his theory of microevolution (i.e. Darwin's finches with beaks that were well suited to the primary food source of each species of finch). Since then support for microevolution has continued to grow. Pesticide resistance, antibiotic resistance... and on and on. However, the debate over macroevolution was then and still is inconclusive. For one, it is impossible to go back in time and observe what actually happened. In the 1830s Darwin was sure that further exploration would reveal more specimens in the geological column. The fossil record would fill in with intermediate species. Research into homologous structures would gradually reveal a "common ancestor." So Darwin's hypothesis of macroevolution evolved and now scientists believe that the lack of intermediate species can be explained by "Punctuated Equilibrium." According to PE species stayed the same (equilibrium) for long periods punctuated by short periods of time when the species evolved quickly into a new species that stayed the same (equilibrium) for another long period of time. Mapping the human genome has revealed that human DNA is closer to rat DNA than ape DNA...and a more complete understanding of heredity makes it mathematically unlikely that changes in DNA (aka. mutations) multiplied to create all the species we see today. Our improved understanding of molecular biology does NOT increasingly support macroevolution.
@mmjdodd
Which pretty much is what Sal said ...
@21stcenturyissues same
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Jay hind jay Bharat
This is a little off Linnaeus didn't think of life as a tree he thought of it more as a ladder with things like worms on the bottom and man then angels and God on the top. The idea of a freer didn't come until later.
@mmjdodd Khan KNOWS that.
I feel like I'm in professor Trelawney's class ;)
If hogwarts was real.......
I wish it was!!!!!!!!😃😃😃😃😃😃😃
Did you guys made a video of animal kingdom also???????😰😰😰😰😰😰😰😰
Fell asleep from his voice lol
@thenoxiousbeing yay, someone got my joke lol
👏👏👏👍👍👍👍👍👍👍👍
am i the only one watching this for the first time in 2020-
No, I’m also
I am a fish, because all humans have fish as ancestors.
Birds are dinosaurs because they are their distant offspring... This is how phylogeny (the current system used by biologists) works. No matter how evolved a group gets, it is still part of the larger group from which it evolved.
WOW LOL hahah
An exception of mammals with no hair would be a dolphin.
...Some species different races....
You forgot Homo sapiens idaltu!
@TheAgnostiic yes I am, and so are you, biologically speaking.
In laymans terms fish only include what we think of as fish, but biologically we are fish. That is we are part of the clade called fish.
If evolution is true and the universe is billions of years old why do we still have rocks? Would'nt all rocks have evolved into animals by now?
LOL
@HeavyMetalCanuck You're partly right, but you're still not fish.
Linnaeus came around before Darwin, so how could he be the "father" of a system organized by our understanding of evolution?
It has since been refined by our understanding of evolution, but you can still classify species even if you didn't know they share a common ancestor by various traits of similarity. Linnaeus was the first to seriously undergo classification of species, even if he didn't know all the systems at play, so he is attributed as the father. Similar to how we consider Sir Isaac Newton a father of physics even though no one knew of general relativity at the time.
God loves y’all sm
Not knowing pronunciations does not instill confidence that the speaker knows his subject and it could have been tightened up a bit but basically good info.
kings play chess on flaming glass shards
@21stcenturyissues who i am
Just trolling.
he really couldn't look up pronunciations beforehand?
kangaroos play chess on friday's German sausage (:
Kings Play Cricket On Flat Green Surfaces
nice one, cheers.
300th like
Are you serious?
through Jesus all is possible
I was watching this bolony with my kid. It is homework, all the evidence is pointing to One creator, that is all! I wish school had better things to teach than religion evolution.
Im watching for my exam, but i 100% dnt believe in evolution.
Did you pass it?
If it's an examination to test your understanding of human evolution of something like it, I wonder how you would go about partaking in an exam about something you don't believe in.
I'm watching for my exam, but i 100% dnt believe in gravity.
@@vargvikernes4859 gravity is real,
@@johnwar1411 Keep believing in whatever your society feeds you
@@vargvikernes4859 yes u are right.we have our own opinions
so youre telling me that you purposely spend your time going onto videos with legitimate evidence to support their claims and then disregard those claims without any evidence of your own... sounds like ad hominem to me
lol i hate taxonomy so much
taxonomy hates you too
@ateopuertorico Like humans lol?
The idea of all life as we know it being descended from one creature does not refer to some kind of God. It is most likely a simple, microscopic creature that developed over billions of years.
I don't know about you, but saying that all life is descended from slime doesn't sound very holy to me.
Ha the polar bear was ur sus
@eugen9611
I'm a banana!!!
If humans are animals, why do they not actually act like animals? what's stopping us?
Congratulations! Best stupid question of 2015. You won.
***** Actually, there is no stupid question in science. It's just a lack of understanding, that is why he asked that question...unless he is a troll, then it is a stupid question. Lol
Amy Belle Aphane A part from the fact that you are right, I was looking at your pictures on Google+ and you are beautiful. Wow.
Do not waste time looking mine. I do not share photos. Bye.
aku ga paham aku ga ngerti udah ngapa
Unprofessional! Species are supposed to be lower case
Dirty
Kangaroos
Play
Cards
On
Fat
Guys
Stomachs
lol xD
Kungfu
Panda
Came
Over
For
Good
Spaghetti
Underrated.
Wala akong maintindihan iyaq na
are black people another species they got different genes
omfg...........................
Race is not expressed in genes. All race is the difference in the amount of melanin in the skin.
Or their physical appearance. And no there is only one species of humans regardless of what you define yourself Homo sapien
www.nationalgeographic.com/magazine/2018/04/race-genetics-science-africa/
www.scientificamerican.com/article/race-is-a-social-construct-scientists-argue/?redirect=1
Not real... God created us. :O
Actually, our dad's sperm fertilized our mom's egg and hormones carried out the pregnancy. Science is truth.
***** really though! I was raised catholic but also in this century and can tell truth from fable. Its romantic to think that way and I understand it but be realistic and don't push your fantasies on other people. Wanna call it a miracle? Sure if it amazes you, cool but don't discredit the truth!
Please don't reproduce, Lori.
False........... Jesuz did
Lori Hansen can't tell confirmly
this is a brain wash; someone is trying hard to destroy kids' faith, lie, lie, lie, no wonder, people act like animals..