Speciation (with example) | Heredity & Evolution | Biology | Khan Academy
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- Опубликовано: 15 авг 2019
- Let's explore how new species evolve from old ones.
More free lessons & practice -www.khanacademy.org/science/c...
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Created by Mahesh Shenoy
This is one of the best video I have ever seen.
What a good pronunciation!
Funtastic explanation🤩. And especially with the example of beetle🐞, I simply unknowingly understood the concept of Speciation.🤗
You KA guys rock!🤘🏻
Sir I will be very thankful if I make myself to clear NTSE biology(bcz my only weak subject is biology) .
BTW sir, your teaching is awesome.
Thanks a lot!! to sir as well as Khan academy
15 minutes of video... Completely clear on the topic. Thank you so much!!
Was Speciation This Easy? Btw Thanku So Much❤
This is the best video I found on speciation.. Thanks
Speciation is the process of evolution of new species from old ones.
Geographical isolation is important for it.
Speciation occurs in the following way:-
1. Firstly, a single species gets somehow geographically isolated due to some reasons like their hopping on in an airplane.
2. Natural selection and genetic drift happens differently on both the groups, that help the random desirable mutation to survive.
3. Thing become more complex and finally these two groups are reproductively isolated.
4. Which means a new species is evolved from an ancestor.
Do tell if I was correct.
Did you recall this after watching the video?
Yes, you are spot on.
'The hopping into an airplane' was just for gags though :).
@@KhanAcademyIndiaEnglish yes sir, I did recall. That airplane one who just to elicit a small laugh
@@soumil8988 oo bhyii english to dekho launde ki XD
Thanks a lot sir.Great effort. I'm so glad. It has helped me to prepare for my board exam.👍👍
What a explanation sir ! Super....
Awesome explaination thanks
I liked this channel it teaches nicely for each and every topic ☺☺
Very big wala thanku😇
What a imagine sir, fantastic......
Amazing next level ,🙏
Thank uh so much sir ..loved ur explanation...easy to understand the complicated topic !!😊👌👍keep going ..!!👍👍
The beetles are backk!
Nice explanation 👌 thank you so much sir 👍🙏🙏
Very nice explanation it is really easy to understand ,this seeing the pictures and u given h/w also. It is really helpful for me I hve understood 😄very nicely👍
Yes...!!
anyone confused about speciation should watch this..tho in a little incresed video speed
thank you so much sir ........
AMAZING .......
Very great explanation
thank you sooo much you made everything clear now
nice explaination...
Great effort ❤️💯 I really loved the video.
Sir you're great.
You make it very much easy
Well done 👍 nicely explained
Excellent explanation 🙏
Mind blowing
Best explaination sir
Nice video man👍👍
Thank you sir
Best explainaition
Sir I have a doubt the wings and horn of bettles are acquired trait or inherited traits . Please reply
Great explanation❤
Best explanation!!👍👍
Wowwww what a explanation superb
Awsm
I thought the beetles were peppers!
thanks for the detailed and informative explanation, I was kinda struggling on the subject
nice handwriting btw
Haha
I thought they were strawberries at first😂😂😂 I really need my glasses again
Thank u sir, for your great explanation
Thank you so much sir
nice lecture
Thank you
I am really Impressed by ur way of teaching, it's amazing thanks a lot❤🙏🌹❤
Love from kashmir 😘🥰😍
Can u explain how this sir is telling that some get horns and someday it catches fire and by accident some who survived were those who had horns isn't it Genetic drift but genetic drifts dosen't lead to speciation????
@@Kihalchal786 brother genetic drift is one of the factor which leads to speciation, which leads to evolution..
Best👍💯
Bhai Saab kya samajhaya hai waah
Nice explanation sir , By the way can u post remaning two chapters of biology ??
Sir u r great
Aeroplane kon laayega sir😂😂😂😅😅
S 😂
Is there real speciation that happen in the world? Not just assumption or story
Nice one
What a explaination sir
Nice explaination 👍👍👍👍👍👍👍👍👍👍👍
Masth explanation sir
Thank u sir ..
Nice explanation sir
Super sir
Thanks alloottt sir
Awsm explanation!!!!👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍🙄👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
Oh this emoji was by mistake 🙄
Well the end result is that they up as bugs still just bugs. How if there is an animal that is a ancestor of everything how would it morph into a different beast ? The birds are very different from a giraffe. Between species crossing is possible and geneticists have spoken on this. I am interested in the fossils of this ancestor you talked about and it’s ancestors. Can you explain that?
Thanks
Why leaves colour changed between video.
Can a species evolve into another family?
For example, beetles evolving into praymantis?
🙈
I assume when the instructor said "DNA of this population" he meant 'genome'.
sir give us the classes in hindi
Fantabulous
👍
imagine beetles sneaking into aeroplanes to move to a different country 😭😭
Can a species become another common ancestor?
Yes
Lajawab Ram sir Jai Ram ji ki
This sounds like scientific mythology or tale...Just kidding
I can't see any science on that
Nice
🙏👍👍👍👍
thanks alot sir......
If humans and chimps evolve from a common ancestor somewhere in africa well the question is how they got isolated reproductively as apes was always around and they mix genes with each other and even after seperated from our ancestral humans which were in africa and we humans moved to different continents why we are still same species even after geographical isolation and on other hand we are thinking that chimps and humans had evolved from common ancestor while we are not isolated from them.
Apes that stayed on the trees maintained their strong bodies suited for alboreal life while apes that were forced out of territories on plains evolved to live on flat land.
As for why humans are not that different since we descended on only a small group of apes that left africa. That being said we do show difference between different races due to adaptations, and their are tribes on africa that have a lot more difference between the average people
Uh......hate seeing lizards...its cinchly awfull.....!!🥺
Does it mean humans and apes are siblings?
Nice interpretation..😂
😂😂
Kinda
Any MEMSians here✋
But why this is not applied on human black person of south africa and white person of american can produce healthy baby while they are geographycally different from immemorable time period
Yeh.....I 2 got d same doubt
Yeh..I 2 got d same doubt...
The groups of people weren't apart for long enough. It was long enough for there to be some genetic variation in structures like n stuff like face shape, skin colour, eyes, etc but it's not been long enough to create new species, especially as humans have a long lifespan and it takes like 15-20 years for new generations to grow and reproduce. Much longer than the few weeks beetles have to wait until they can reproduce
also humans have been moving between countries for hundreds of years so there's plenty of gene flow
Is just me who can't see any science in all these hypothesis???
He is from other country
Sharana Basava you don’t say?