Genetic Drift - bottleneck and founder effect

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Күн бұрын

This lecture explains about the genetic drift and the example of genetic drift events such as the bottleneck effect and the founder effect that explains the change in the genetic frequency with time by random chance. Genetic drift describes random fluctuations in the numbers of gene variants in a population. Genetic drift takes place when the occurrence of variant forms of a gene, called alleles, increases and decreases by chance over time. These variations in the presence of alleles are measured as changes in allele frequencies.
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Thank you for watching

Пікірлер: 377

@henryagu.a 2 жыл бұрын

Even after 5 years, this is still gold!❤️

@shomusbiologyofficial 2 жыл бұрын

Thank you so much for appreciating my efforts

@haritham334 2 жыл бұрын

Yes..❤️

@vraiepaix3847 5 ай бұрын

✋

@thevanishing19 4 жыл бұрын

Sir very very thank you!! what an amazing explanation I´ve seen! Im from Mexico and no one in my school could explain this better than you did! congratulations!

@shomusbiologyofficial 4 жыл бұрын

Glad to hear that you're getting benefit from my lectures. Please subscribe and share

@emmi121ful 6 жыл бұрын

In bottle neck we lose gene pool Eg if initially we have 100 tigers & due to some human interference or Natural disaster 90 tigers die & we r left with 10. Now if we will breed the left 10 tigers & then make them back 100 What we lose here is Gene pool as the 90 tigers we lost may have certain Genes which may have some benefits like fighting a particular disease but here we lost them.

@AmitKumar-em3vz 5 жыл бұрын

Great sir.

@kaushikparthasalini9999 4 жыл бұрын

yes definitely....

@ammarkhan2640 3 жыл бұрын

😎Oo

@misbahlatif4828 2 жыл бұрын

Exactly

@NONGPURENBA 2 жыл бұрын

you are right Wani Javid, bottleneck events lower genetic variation in the population. As the population size becomes smaller due to certain events like natural calamities, the changes in allele frequency becomes highly evident with majority of individuals in the population having either more recessive or dominant alleles. In short genetic variation is very less among the individuals in that particular population. Even when the population size increases in the future also the variation in the population remains low which is highly detrimental for survival. The same is true for founder effect, it decreases the genetic variation in the population. he rightly explained that part with example of people from Africa.

@alexcordero6672 8 жыл бұрын

wow! this is easily one of the best presentations on GD I've watched. thank you for taking the time to do this.

@mialmastaposeia Жыл бұрын

I watched already 20 videos of you. You are such a passionate teacher and your explanations are so rich and clear. Greetings from Spain!

@shomusbiologyofficial Жыл бұрын

Thank you for appreciating my efforts

@drujjawalrathore 6 жыл бұрын

Thank you so much Sir! Its a blessing to have you on KZfaq!

@user-uf5bk8zc7n 6 жыл бұрын

You are amazing, very clear and precise . Moreover that you expain all your lessons in English is super scientific. Thanks so much. You have no idea how valuable I have found your work. Good job!!!

@samsam7524 7 жыл бұрын

salam..i like ur videos..i never was interested in this subject but u made it easy for me..n now regularly m taking ur lectures.. thanks alot.. stay blessed

@thesolitaryreaper2388 5 жыл бұрын

You cleared concepts so easily and the last one why it is named drift was amazing you nailed it 🤩

@shomusbiologyofficial 5 жыл бұрын

You're welcome

@spanditaroy9973 6 жыл бұрын

amazing explanation, sir. i had great confusion about genetic drift, but after watching this video, i understand properly. thank u very much..

@nakulghuge9421 2 жыл бұрын

You are just awesome sir! Here am after 4 years of NEET exam and you're helping me in my degree course as well. Thank you!

@shomusbiologyofficial 2 жыл бұрын

Thank you so much for appreciating my efforts

@harenihareni2555 5 жыл бұрын

How can u be this much perfect bro??U r juzz amazing!!Keep posting..

@shomusbiologyofficial 5 жыл бұрын

Glad to hear that you are getting benefit from the videos

@aryasree6994 6 жыл бұрын

Thank you sir for tha relevant information.actually I dont know about genetic drift.your video very helpful for us.thank you so much sirr

@monika5034 7 жыл бұрын

thank you so much sir.. i am doing Ph.D in human genetics but the concept of genetic drift was not cleared til now.. i was always confused by bottleneck and founder effect.. you made it so easy nd logical.. thanks alot.. keep helping :)

@shomusbiologyofficial 7 жыл бұрын

+Monika Lochan thank you for watching the lecture. Glad it helped.

@tasnimarfi7566 3 жыл бұрын

Very informative and helpful

@behappyandkeephappy3269 2 жыл бұрын

phd hoke b unped

@praiaggandhi 5 жыл бұрын

THANKS A LOT SIR!! YOU CLEARED ALL MY DOUBTS FROM GENETIC DRIFT!!!

@shomusbiologyofficial 5 жыл бұрын

You're welcome

@angelpawar3986 7 жыл бұрын

thnku sooo much sir ur all d videos r soo helpful keep it up ..n god bless u thnks to shomu's biology

@jasminec9379 5 жыл бұрын

Simply awesome Sir and dat final graph made d idea a precise one...

@arjunjichkar 3 жыл бұрын

Oh god, such a difficult concept was explained so well 🙌. A big thank you sir 🤩

@yumnahannan3558 5 жыл бұрын

Absolutely amazing sir.. 🤗

@meghapatil9750 5 жыл бұрын

sir its really amazing..i understood it vv well.thankyou..

@AbdulRahman-jr7ql 6 жыл бұрын

you made it so simple!thank you.

@AmitKumar-em3vz 5 жыл бұрын

Dada the Graf you showed is nowhere available.and nobody tolled what actually is this Genetic Drift. Thank you. You are a great Blessing to The People of India.

@shomusbiologyofficial 5 жыл бұрын

Thank you so much for appreciating my efforts

@bhavanipattar446 6 жыл бұрын

your amazing no words to explain your teaching sir

@dhuha5925 6 ай бұрын

Tq so much sir...I don't understand what is genetic drift until i found your vid❤❤

@shomusbiologyofficial 6 ай бұрын

You're welcome. Glad to hear that you're getting benefit from my lectures

@axmalan 7 жыл бұрын

really helped me understand it, thank you so much!

@pritipragyanswain4470 7 жыл бұрын

these vdos are really helpful. thank u.

@MuhammadIbrahim-jf4ix 5 жыл бұрын

after 1 year onces agai i am watching you i hope i will be do better after listening you. thanks

@khadeejasalah776 2 жыл бұрын

No words to explain my gratitude towards you sir

@shomusbiologyofficial 2 жыл бұрын

Thank you

@Kerwyn204 7 жыл бұрын

you are a life saver thank u so much!!

@rakeshachary7543 2 жыл бұрын

Wow!!! Wow!!! Wow!!! India needs lecture like this 👍👍👍🔥🔥🔥🙏🙏🙏🙏

@shomusbiologyofficial 2 жыл бұрын

Thank you so much for appreciating my efforts

@na_nayanika 6 жыл бұрын

Thank you soo much for making such an awesome video... Very good explanation really.. I love your videos 😊😊

@shomusbiologyofficial 6 жыл бұрын

It's nice to hear that you are getting benefit from the videos

@sparklelight 6 жыл бұрын

Beautifully explained💎

@rinabera147 2 жыл бұрын

My favourite lecturer and thanks for amazing explanation ❤️❤️

@shomusbiologyofficial 2 жыл бұрын

Thank you so much for appreciating my efforts

@soumyamishra8990 6 жыл бұрын

Thnx a lot Shomu ji

@dipakbasak89 6 жыл бұрын

Thank you very much for this video..

@bubundas77 5 жыл бұрын

Very useful and meaningful video. I am a big fan of your channel and you.

@dramit1815 6 жыл бұрын

very good and lucid explanation ..from a medical professional

@fakharpervaiz3400 4 жыл бұрын

Really a great one ....!

@kondwanimulungu8902 6 жыл бұрын

you are awesome sir ,thanks a lot

@deepthi.kkunchu8473 3 жыл бұрын

I really like the way you explain things...thank you sir.. Can you help to to reach your class about inbreeding depression and problems

@shipayansaha8716 4 жыл бұрын

The explanation is simply awesome ...it was beneficial for me...A big thanks sir😊

@shomusbiologyofficial 4 жыл бұрын

Glad you liked my lectures

@fizzabatool799 4 жыл бұрын

Any one can share lecturer regarding wahlund principle

@gabizzer 6 жыл бұрын

Your accent is very very strong, making hard to focus at first for a foreigner like me ; but when the focus is put on what you say, the explanation is absolutely perfect ! Thank you !

@TheRiddleDungeon 7 ай бұрын

Thank you so much for making this topic to understand easily and elaborately

@shomusbiologyofficial 7 ай бұрын

You're welcome. Glad to hear that you're getting benefit from my lectures

@shalujain5445 7 жыл бұрын

thnks a lot.. keep going..best sir..😇

@vekuzochizo9355 6 жыл бұрын

Dr shomu's thanks allot for your help......aniway can u please explain me meiotic drive and migration pressure....... thanking you in anticipation. ......

@MrGbhattacharyya 5 жыл бұрын

In case of bottleneck effect many unique combination of traits might just get wiped out because many many individuals were killed [as in this elephant seal example] thus it is essential to understand the concept of allele which is one of gene pair found on the homologous pair of chromosomes because pair of alleles carry the unique traits in individuals [refer Tt, or Rr in Mendel's experiment], all those killed individuals had unique alleles which were just wiped out from the population...

@maramnikhil2642 7 жыл бұрын

fantastic sir!!!!

@HDSofficial 5 жыл бұрын

Thank you sir. Keep making a biology video

@girishunnikrishnan9698 6 жыл бұрын

would you please make a class on genetic polymorphism and it's three basic avenues.

@keshavsuho Ай бұрын

8 years later and you're still replying the comments wow

@shomusbiologyofficial Ай бұрын

Yes i try to do my best

@shivakishor1033 5 жыл бұрын

Thank u sooo much sir🙏

@nareshzoology5666 5 жыл бұрын

Tq sir really helped 2 teach it right way

@kt29511917974 3 жыл бұрын

Great explanations. Thank you!

@shomusbiologyofficial 3 жыл бұрын

You're welcome. Glad to hear that you're getting benefit from my lectures

@pragyasingh6445 6 жыл бұрын

Awesome explanation sir

@alwinaanam1231 8 жыл бұрын

great video..............................

@priyachetri3882 Жыл бұрын

And the idea is that we clearly understood the things ❤️ thank you 😌

@shomusbiologyofficial Жыл бұрын

Glad it helped

@priyachetri3882 Жыл бұрын

This chanel helping me a lot ❤️

@rafsanjani8491 6 жыл бұрын

Thank you good sir.

@fadilahmohd8903 4 жыл бұрын

Impressive explanation!

@ojasgupta1004 2 жыл бұрын

Sir i have I doubt Can we say that at the time of minimum population, natural selection occurs simultaneously with genetic drift because at that time the organism selects the best environmental conditions. Please clear my doubt

@eyesnehasingh Жыл бұрын

Such an amazing explanation Thankyou Sir

@shomusbiologyofficial Жыл бұрын

You're welcome

@aishaanwar6287 4 жыл бұрын

bhai bahut accha samjhaya bahut hi jyada accha ek like to banta hai mere se.... thank u soooo much bhai

@shomusbiologyofficial 4 жыл бұрын

You're welcome

@Roycedavinci 7 жыл бұрын

Thank you sir,May God bless you.

@shomusbiologyofficial 7 жыл бұрын

+Roycedavinci thank you.

@dieselvin6011 7 жыл бұрын

it was very helpful thnks sir

@oldernu1250 Жыл бұрын

The allele clock does not beat metronomically. Multitudes of factors influence genetic "drift". Keeping it simple, access to water, exposure to variable weather effects plants' growth rates and cycles. As does mineral composition of soil. And eating plants and animals in different areas will cause alleles to differ. We're 99% the same, but that 1% is hugely important.

@limparoy4392 4 жыл бұрын

Sir this video was so helpful. Thank you so much. ☺

@shomusbiologyofficial 4 жыл бұрын

You're welcome

@MrGbhattacharyya 5 жыл бұрын

for the founder effect it is the classical example...The Afrikaner population of South Africa is mainly descended from one shipload of Dutch people ... The ship of 1652 contained a Dutch man carrying the gene for Huntington's disease,... very good reading

@sayantansaha53 3 жыл бұрын

Great explanation sir

@noorr9637 5 жыл бұрын

This guy is very helpful. I also need toxicology lectures

@shomusbiologyofficial 5 жыл бұрын

Thanks

@nunavathjyothi7232 5 жыл бұрын

Thank you sir it is very useful video for all who are studying zoology subject

@shomusbiologyofficial 5 жыл бұрын

You're welcome

@shabnam5940 3 жыл бұрын

Sir you a example of genetic drift, in this you suppose the p . 5 and q. 5 after the time period p becomes 1 then if p+q=1 , then if we calculate the p and q in population it's also become equal to 1 , then why should not follow the Hardy Weinberg law

@krishnaanil1676 4 жыл бұрын

Thank you brother👌

@nareshzoology5666 7 жыл бұрын

superb sir

@user-dv5bh3qq6m Ай бұрын

Thank you so much!!!!! You're very good

@shomusbiologyofficial Ай бұрын

You're welcome. Glad to hear that you're getting benefit from my lectures

@subhambagchi6694 4 жыл бұрын

Amazing explanation sir It really helped me Thank you so much for your videos sir And sir please make some videos on plant taxonomy 😊

@shomusbiologyofficial 4 жыл бұрын

Sure. Thank you.

@subhambagchi6694 4 жыл бұрын

@@shomusbiologyofficial welcome sir

@kainatmumtaz7986 4 жыл бұрын

I have a question sir. Can we have any control on selection in genetic drift?

@PhilipSKaspar 4 жыл бұрын

I have a question: at minute 10:00 you say that now we have much more features in the population compared to the population we saw earlier. Why is that so?

@rashaap8553 3 жыл бұрын

You explained genetic drift with 2 different allele frequency, how does the same applies for seal population? Can it happen for 3 or 4 alleles?

@TheAnurag515 7 жыл бұрын

Hi Shomu, I appreciate your way of teaching.. Can you please make a lecture on Inbreeding and how does it impact the generations

@shomusbiologyofficial 7 жыл бұрын

+Anurag Pundir thank you. I will try to make a lecture on that as well.

@nilotpalchakraborty2903 4 жыл бұрын

@@shomusbiologyofficial sir.. inbreeding a ekta class plzzz.

@kaderbio 8 жыл бұрын

thank you so much professor!

@shomusbiologyofficial 8 жыл бұрын

+Ameur Abdelkader thank you. Glad you liked it.

@bijayalaxmisabar3587 4 жыл бұрын

Simply super sir

@MrGbhattacharyya 5 жыл бұрын

Allele and Alleles need clarification, and the classical example of bottleneck effect you mentioned is the population of Northern elephant seals....hunting reduced their numbers to 20 around the year 1890s

@anudad4547 11 ай бұрын

Happy Teachers day sir Your a very great teacher in entire state 🙏

@shomusbiologyofficial 11 ай бұрын

Thank you so much for appreciating my efforts

@SanjayKumar-mu9qo 5 жыл бұрын

Thanks a lot

@josephlihimba8069 6 жыл бұрын

Excellent

@pratikshapriyadarsiniswain1571 3 жыл бұрын

Thank u so much sir 😊

@kumarmritunjay 7 жыл бұрын

wonderful brother my concept is clear

@deveshkashyap4066 3 жыл бұрын

It really helped me a lot❤️❤️❤️❤️...🙏🙏🙏🙏Guru jiiii

@shomusbiologyofficial 3 жыл бұрын

You're welcome. Glad to hear that you're getting benefit from my lectures

@parashhabib 4 жыл бұрын

Very nicely presented. Thank you

@shomusbiologyofficial 4 жыл бұрын

You're welcome

@gayatripattnaik5038 5 жыл бұрын

Thank you sir...very helpful

@shomusbiologyofficial 5 жыл бұрын

You're welcome

@hamnamalik9034 5 жыл бұрын

thnku kojyyy shomu

@emangul6088 2 жыл бұрын

Fabulous,fantastic lecture sir

@shomusbiologyofficial 2 жыл бұрын

Thank you so much for appreciating my efforts

@sardarsaad460 5 жыл бұрын

Amazing sir..❤❤

@shomusbiologyofficial 5 жыл бұрын

You're welcome

@bvenkatesh6212 4 жыл бұрын

Very nicely explained. Thank you 👍

@shomusbiologyofficial 4 жыл бұрын

You're welcome

@ranjanachauhan92 3 жыл бұрын

You are really very good teacher sir

@shomusbiologyofficial 3 жыл бұрын

Thank you so much for appreciating my efforts in

@manikantalp4776 4 жыл бұрын

Tq sir ,teaching os amazing

@shomusbiologyofficial 4 жыл бұрын

Thank you. Glad you liked my lectures

@sudiptapal5161 7 жыл бұрын

Awesome

@rajithabommasamudram9790 5 жыл бұрын

which materials to follow for evolution?

@bakashabajacob3130 2 жыл бұрын

Thank you sir. I really appreciate it,. 👏👏👏

@shomusbiologyofficial 2 жыл бұрын

You're welcome

@munnsworld6492 4 жыл бұрын

Clear all my doubt thank you sir

@shomusbiologyofficial 4 жыл бұрын

You're welcome. Glad to hear that you're getting benefit from my lectures

@prasunchatterjee1691 7 жыл бұрын

thank you so much🙏

@shomusbiologyofficial 7 жыл бұрын

+Prasun Chatterjee glad it helped