Videos

6) Photo 51 - Confrontation

Added Sep 12, 2016 •

Copy this URL:
Embed code:	<iframe class="edlio-embed-player" type="text/html" width="640" height="360" src="//bhhs.bhusd.org/apps/embed/?v=119899" frameborder="0" allowfullscreen></iframe> Change dimensions

Show Transcript

around the time Franklin gives her last presentation at King's College Jim Watson shows up in office  he tries to show her pauling's paper perhaps to convince her that falling will beat them to solve the structure if she doesn't pull her data with him and Creek at according to Watson's account he implies that she is incompetent X-ray pictures  John has he tells us in the double helix she began to advance toward me and then he said fearing that in her anger she might strike me I retreated to the Absurd she was almost half his size  Swanson men reports did he runs into Maurice Wilkins Wilkins shows Watson photo 51 and when it's all this suddenly what I was surprised when Fisher oh well this is my speed on the last couple of days or something I care to be like that for months my mouth fell open and my post began to race Watson says in the double helix it is the clear X turn the signature of a helix that ignites his excitement but there's more what's the number of lines in the photo shows that each Twist of the Helix has 10 units or molecular building blocks and the dimensions of the image cool respond to a helix of 34 angstroms per turn  Wilkins gives this crucial information to should I get the basic parameters for building the helical back pains go to 51 on his newspaper and reports to Creek based on Franklin's data Crick and Watson go to Lawrence Bragg the head of the windisch lab and he gives them permission once again to build a model  they begin on February 4th 1953 Franklin places DNA in a class of molecules with a certain type of symmetry as these simple drawings in her notebook illustrate the in patience of that symmetry would be obvious to an expert like Francis Crick trick Absa directions  two strands each with the sugars and phosphates running in different directions and antiparallel helix  so where did the bases go on the outside as Watson and Crick depicted in their first model or the inside Franklin had told them there were two important Clues a few years earlier a British scientist William Asbury theorize that the for vase adenine thymine guanine and cytosine would be stacked like pennies and a Columbia University Erwin chargaff discover DNA always contains equal amounts of adenine and thymine as well as equal amounts of guanine and cytosine at first Watts thought that the bases must be paired like with like a with a g with G and so on but an office mate Jerry Donahue did he's using the wrong chemical forms with the right forms Watson then makes a giant leap he finds he can fit the bay is into the Helix measured by Franklin if he pairs a with T and G with C arranged this way the bases form connecting runs in a twisting ladder on the inside of a double helix  it is Rosalind Franklin's experimental framework a collection of evidence painstakingly accumulated over two years that God's Watson and Crick to solve the structure of turn on  and in another Eureka moment the structure rewards them with the immediate realization of how DNA unzipping the Helix produces two templates to create two new Gila sees each identical to the original DNA isn't just a molecule it's the blueprint for life the day was play February 28th 1953  that was the day that they went into the pub the eagle and quick told every take me to discover the secret of life

Uploaded by Kyle Kobe.

Videos

6) Photo 51 - Confrontation

More videos from Kyle Kobe