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Biology 13 Online
OpenStudy (anonymous):

I need help with this screenshot...Please click on this question to help me out....Thank you :)

OpenStudy (anonymous):

wat?

OpenStudy (anonymous):

Here it is

OpenStudy (anonymous):

here is the link: http://www.dnai.org/

OpenStudy (anonymous):

now wat u want?

OpenStudy (anonymous):

I need help on filling out the table :)

OpenStudy (anonymous):

kk

OpenStudy (anonymous):

yuppee

OpenStudy (anonymous):

erwin chargaff;- the discovery of thymine and adenine amounts in DNA were about the same as the amount of guanine and cystosine. This is now known as the third Chargaff rule and along with two others, more about the DNA has been known because of the biochemist’s work.

OpenStudy (anonymous):

rosalind franklin;-Rosalind Franklin made a crucial contribution to the discovery of the double helix structure of DNA, but some would say she got a raw deal. Biographer Brenda Maddox called her the "Dark Lady of DNA," based on a once disparaging reference to Franklin by one of her coworkers. Unfortunately, this negative appellation undermined the positive impact of her discovery. Indeed, Franklin is in the shadows of science history, for while her work on DNA was crucial to the discovery of its structure, her contribution to that landmark discovery is little known.

OpenStudy (anonymous):

linus pauiling;-worked on examining the chemical bonds that compose proteins. The results he produced are still considered as the fundamental rules of biochemistry and have influenced several useful biotechnology applications

OpenStudy (anonymous):

Maurice Wilkins;- worked with the Manhattan Project before turning to biophysics. He produced the first image of DNA fibers, which, amidst conflict between he and colleague Rosalind Franklin, contributed to the Watson and Crick double-helix model shared in 1953. Wilkins received the Nobel Prize for his work. He died on October 6, 2004.

OpenStudy (anonymous):

thanks for your detailed response....:)

OpenStudy (anonymous):

james watson ;-Noted for his decisive work in the discovery of the molecular structure of DNA, the hereditary material associated with the transmission of genetic information. He shared the Nobel Prize for Physiology or Medicine with Francis Crick and Maurice Wilkins in 1962.

OpenStudy (anonymous):

Thanks!

OpenStudy (anonymous):

ur welcome

OpenStudy (anonymous):

Answer the following questions, referring back to the materials you viewed above: 1. Watson and Crick knew that the triple helix model of DNA that Linus Pauling had proposed was incorrect. What evidence did they have for such a conclusion? 2. The work of Rosalind Franklin provided a key piece of data for Watson and Crick’s model of DNA. Summarize that evidence and how it was pivotal to the correct model being built.

OpenStudy (anonymous):

1.The problem of replication could not be worked out in triple helix

OpenStudy (anonymous):

2.Rosalind Franklin's work with x-ray diffraction revealed the double helix structure of DNA.

OpenStudy (anonymous):

How about Francis Crick?

OpenStudy (anonymous):

Francis Crick;-Highly regarded for his discovery of the structure of the DNA molecule with his colleague James D. Watson, Francis Crick was a scientific genius. He was a British molecular biologist, physicist, and neuroscientist who jointly won a Nobel Prize for Physiology or Medicine with Watson and Maurice Wilkins mainly for their discoveries concerning the molecular structure of nucleic acids.

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