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Erwin Chargaff (11 August 1905 – 20 June 2002) was an Austro-Hungarian-born American biochemist, writer, Bucovinian Jew who emigrated to the United States during the Nazi era, and professor of biochemistry at Columbia University medical school.
Learn about the life and achievements of Erwin Chargaff, a pioneer of DNA research who discovered its base ratios and structure. Explore his early years in Austria, his travels in Europe and America, and his contributions to science and culture.
Jun 20, 2002 · Erwin Chargaff was a molecular biologist who discovered the base ratios of DNA in the late 1940s. He was born in Austria-Hungary, studied chemistry in Vienna and Berlin, and worked at Columbia University in New York.
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Learn how biochemist Erwin Chargaff's analysis of DNA base composition and X-ray crystallography by Rosalind Franklin helped James Watson and Francis Crick propose the double helix structure of DNA. Explore the properties and features of the DNA double helix and its antiparallel, right-handed nature.
- A codon is the name for a group of three subsequent nucleotides in RNA. Since RNA is transcribed from DNA, the DNA sequence will determine the sequ...
- As far as the 2nd question is concerned , it is because the double helix should have a uniform diameter all throughout otherwise there might be pro...
- Not exactly. The amount of each type of base in a cell's DNA is the _same in all cells in the whole organism_. Genetic code is the same, but gene e...
- Seems mostly correct. The one mistake I notice is that I think the word you were looking for was histones (not histamin). Chromatin is composed of...
- I'm not sure it is the NH2 group which accepts protons most readily to make it a base. I think it could be the nitrogens in the rings, which I thin...
- You can tell if if the helix is right handed or left handed based on the way it twists. Here's a link to an image that shows the difference between...
- I will answer you the way I have answered this question before with other users. I hope it is adequate. There are several differences. To start, DN...
- The four nitrogenous bases are as follows: Adenine, Thymine, Guanine, and Cytosine. Cytosine and Thymine are pyrimidines Adenine and Guanine are pu...
- There isn't a single order — all combinations along a strand are possible. The only thing that is fixed in DNA is that A pairs with T, and G pairs...
His two main discoveries, (i) that in any double-stranded DNA the number of guanine units equals thenumber of cytosine units and the number of adenine units equals the number ofthymine units and (ii) that the composition of DNA varies from one species toanother, are now known as Chargaff's Rules.
- Nicole Kresge, Robert D. Simoni, Robert L. Hill
- 2005
Erwin Chargaff was awarded the National Medal of Science for fundamental chemical and biological studies establishing the basis for modern concepts of the mechanisms of protein synthesis and the genetic role of nucleic acids.
Jun 30, 2002 · Erwin Chargaff, whose research into the chemical composition of DNA helped lay the groundwork for James Watson and Francis Crick's discovery of its double-helix structure -- the pivotal...
