THE MOST BEAUTIFUL EXPERIMENT IN BIOLOGY: Meselson & Stahl, The Semi-Conservative Replication of DNA
Ғылым және технология
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In 1958, Matthew Meselson and Frank Stahl published the "most beautiful experiment", where they demonstrated that DNA undergoes semi-conservative replication. In this video, we describe the experiments that lead to this discovery and why understanding how DNA replicates is so important. This video is a complement to Matthew Meselson's iBiology Discovery talk, where Meselson recalls the events that led him to meet Frank Stahl and to plan and execute these experiments.
This video was produced in collaboration with iBiology.
iBiology (www.ibiology.org) is a growing collection of free open-access online videos by scientists about research and discoveries in fields including cell biology, neuroscience, molecular biology, microbiology, ecology, development, and biophysics, and also features short talks on topics such as professional development, careers, policy, and education. iBiology is funded by NSF, NIGMS, and HHMI, and is supported by the ASCB and UCSF.
Пікірлер: 255
this was so satisfying to watch...your handwriting is GLORIOUS
@timmy18135
4 жыл бұрын
Kind of like Vihart
@scottelon2837
2 жыл бұрын
i know Im asking the wrong place but does anybody know a trick to log back into an instagram account..? I somehow forgot the login password. I would love any tips you can offer me
@scottelon2837
2 жыл бұрын
@Caleb Luis thanks so much for your reply. I got to the site through google and Im waiting for the hacking stuff atm. Seems to take a while so I will reply here later with my results.
@scottelon2837
2 жыл бұрын
@Caleb Luis it did the trick and I now got access to my account again. I am so happy:D Thank you so much, you really help me out :D
@calebluis2910
2 жыл бұрын
@Scott Elon glad I could help =)
this must have taken ages, but I am so grateful for it! it's difficult for me to pay attention to stuff like this, but the drawings made it very entertaining
As a biology student I found this really helpful. Thank you for posting it!
i've never ever written a comment on a youtube's video before. but this video totally helped me and it deserves all the recognition it can get. this video was so amazingly clear, fun to watch, understandable and just life saving. thank you so so much, love from Malaysia !
Wow I'm German and hadn't unterstand the Meselson and Stahl experiment til yet. I watched 10 german videos about Meselson and Stahl, but only THIS video has show me how it works! I thank you so much!! :)
@barracudacsgovideos9056
9 жыл бұрын
Indeed... :D
@Antonia-pj1jf
7 жыл бұрын
Salmmor haha Same 😂
@mohammedsaqhibbilal1203
2 жыл бұрын
How is being German related to better understanding of a molecular biology topic? Science is universal..nationality should hardly matter!
@susukiii4836
Жыл бұрын
Omg ja einmal auf Englisch angeschaut und alles verstanden
The only Meselson and Stahl video on KZread that actually helped me. Two thumbs up!
This was amazing because you gave it so much context. My Biology teacher wasn‘t able to explain it in a logical way. 🙆🏻♀️ Now I‘m feeling well-prepared for my pre-exams. 👍🏼
This video was so so SO well done. Please continue on!!
I have never studied anything bio related before my first bio class in college. I was crazy nervous but these videos have helped me understand much better! Thank you so much !! :)
Brilliant! Was having a hard time understanding my Biology paper but this makes everything so clear! Thank you very much!
OMG I finally understand what my teachers were talking about! Thank U so much ☺
This is the best video on the internet for learning this. Thank you guys for the amazing video :)
this video is super good! definitely helped me understand this experiment A LOT more than i had before.
Thank you so much! It was hard to understand in class and in my textbook, but you explained it very well and now I understand it!
Thanks for this amazing video!! It makes it much more easy to understand
Fantastic!!! Your videos keep getting better and better... Thanks for this videos...
It's awesome how it describes the process in such a interesting way and also the drawings are Soo good
Yours is one of the most beautiful videos on this topic .
simple, well explained, easy and clear sound , may Allah bless you for that !
@timmy18135
4 жыл бұрын
🕸🕷and may your good angel 👼 support you
@feedmewifi_477
4 жыл бұрын
Ibrahim Aldhoon inshallah
@Get2KnowJesus1
3 жыл бұрын
false god and idol. Jesus is the ONE true living God.
@rubydirks147
3 жыл бұрын
@@Get2KnowJesus1 this might be a shocker but there is more than one religion in the world!
@burrito7317
3 жыл бұрын
@@Get2KnowJesus1 stop shoving your religious beliefs into others, let people believe what they want to believe geez.
Beautifully done, really helped!
Just the video I was looking for!!!! Awesome!
This literally gonna help me on the bio test tomorrow. Thanks
This really helped clear my concepts. Thanks a lot
Great explanation!! LOVED IT
this was awesome plz don't stop making such type ved and thank you so much!
Super, wonderful, fantastic, amazing, mind-blowing, such a good creativity , explaining using diagrams makes students understand the concept easily and remembering quickly , tq so much, for this type of videos
Thank you, it helped me so much!
Whoever disliked the video has a mental problem ...seriously who In the damn world would dislike this amazing creation, it's perfect from the colours to the voice to the explanation .. everything in this video is perfect.. thank you soooo much ❤❤
Thank you so much! Very informative and understandable!
So useful😍 simple and clear thank you❤️
Thanks a lot for such informative content!
This is truly an amazing video. Thank you so much!
Your voice makes the video more understandable ❤️
Beautifully explained!
Thank u for d video.. It was so simple and clear.
Very educative, thank you very much. My semester just got saved!
@timothyso9781
8 жыл бұрын
+Anant Goswami I feel your pain. School is tough.
@anupamagoswami
8 жыл бұрын
I'm in college bru!
@timothyso9781
8 жыл бұрын
Anant Goswami oh boy
The best video in KZread Hats off for you sir.
This lesson is quite amazing, am glad that I finally understand DNA replication
This is such a logical explanation. Easy to understand. Thanks a bunch ❤
thank you so much this was so easy to understand!! 😭😭👍👍
this video is sooo good thank you!!
Thank you for posting it!
Amazing video.
I loved it even for the international student was so easy to understand
Thank you So much. It is Simple,Intresting to understand the concept.
OMGG!!!! THANK YOU SO MUCH!!! This was so helpful!!
thank you! this video helped a lot
Thank you for this thorough and clear explanation of Meselson's and Stahl's experiment.
Very nice explanation.
Actually, everyone gives Watson and Crick all the credit for discoverying DNA Structure buuuuuutttt, Rosalind Franklin was the one to discover this, for she spent so much time using X-Rays in order to figure out the DNA structure, which caused her Cancer. While she was sick battling cancer, two other students researching DNA Structure in the same University( WATSON AND CRICK) sneaked into her Dorm room and stole all her notes AND Published them taking all credit and A Nobel Prize for it But Rosalind Franklin died of cancer before she could take back all recognition of her Research.
@DanielLieu
8 жыл бұрын
+Adlin Hernandez I like how you talked about Rosalind Franklin! She was actually a huge part in the discovery of DNA because of the X-Ray diffraction she was able to obtain. It was critical in understanding that DNA spiraled in a double helix. Unfortunately, due to the reputation of women in science, her work wasn't really respected and neither was herself as a scientist in general. Unfortunate that her death occurred before the Nobel Prize because I believe she would have made a huge impact in the stigma that women scientists aren't as great as men -- which even exists today as women get paid less :) Hopefully that can change!
@rohanshetty5103
8 жыл бұрын
is it true ..? i mean i never heard of it before !
@DarwiiNs
7 жыл бұрын
yea she basically told them everything they wrote about
@teresataylor-whiteley823
7 жыл бұрын
This is not strictly true. Yes Rosalind Franklin was an X-Ray Crystallographer at Kings College London were work was undertaken to determine the crystal structure of DNA (along with the scientist Maurice Wilkins) , the data of which Watson and Crick used to describe the structure of DNA in their publication 'The Double Helix'. However, Watson and Crick were working at a laboratory at Cambridge, not Kings College London and neither of them were students, they were all research scientists working in different laboratory groups. In 1956, three years after Watson and Crick had published their model, Franklin was diagnosed with ovarian cancer, which exposure to x-rays has been suggested to be a possible factor in her illness although other members of her family had previously died of cancer.Nonetheless, Franklin's work was crucial to the development of Watson and Crick's model and she definitely should have received recognition.
@jemmaxoxo9229
6 жыл бұрын
TRUTH she died because of her research and work
Tysm for this video 💜
Easy to understand and fun to watch too
Very useful to me,thank you!
Muchas gracias ♥
Thank you... I understand!!
so nicely explaned...thnks
Wow .....‼️‼️‼️‼️ excellent explanation
Thanks now the concept is crystal clear😊😊😊
Amazing. Very very damn helpful.
Beautiful video
thank you so much! this saved me.
Very well explained
thank you for this really helped me
wheenever i watch ur videos your writing is so satisyying
Very helpful 😊
excellent presentation👍👍
Nice clarification information 👍
Thankssssss. The german yt videos were as complicated as my biology book, but this Video was easy to understand You saved my life xD
Perfect video.
This is the most beautiful way to explain,the most beautiful experiment in the history of biology.
@YourekaScience
2 жыл бұрын
Thank you! So glad you like it :)
Thank you very much doctor
woww wowww woowwww... this video is superb as u gave us the information from the beginning :D
Really thanks a lot! It was explained so nicely that after watching many videos I finally understood because of this!!!!
This is really good
Very clear
You explaind it soo well that I can unterstand it even if I am german
Niche wali line ki vajhe se nhi dikh reha hai
can u explain beadle and tautum experiment
Well done! ^.^
really beautifull idea....
Beautiful .
You deserve more subs
Good work, here!
wow i have a bio final for college tommorrrow and you helped so muc
@YourekaScience
3 жыл бұрын
You're very welcome!
This video is so so helpful, I'm definitely a visual learner
@Eerisey17
7 жыл бұрын
same!
@ARedVelvetBunnie
7 жыл бұрын
English Rose me too
superb!
thank you!
It is indeed a very elegant experiment
THANK YOU
i need those markers
so is n15 old and n14 new?
thank you so much bless you
Even if english isn't my first languaje you managed to explain it better than other videos in spanish (first languaje) congrats
Outstanding effort👌👌
@YourekaScience
3 жыл бұрын
Thanks a lot 😊
AMAZING EXPLANATION!!! I finally understand this yayayaya :D one question though: what if the bacteria were allowed to replicate a third time in N-14?
@charlieshin9868
6 жыл бұрын
Afifa Amjed it would depend on which strand was getting replicated i think. So if it was the light strand it would just come out as 2 light strands. But if it was the hald half strand it would come up with 1 strand that is light and 1 strand that is half half
@afifaamjed2294
6 жыл бұрын
www.thestudentroom.co.uk/attachment.php?attachmentid=698336&stc=1&d=1508899096 This is the picture in my textbook. I don't get the results of the 3rd generation with N-14 (test tube 4).
wow... it is really good...
Awesome n best n beautiful vedio ever watched
@YourekaScience
3 жыл бұрын
Thank you so much 😀
really awsome vids
Ceasium chloride density gradient was used to separate.
You should add time stamps it will be more convenient for us 😉 . 👏 Amazing video
@YourekaScience
2 жыл бұрын
Thanks for the tip!