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What did Erwin Chargaff accomplish in his life?

Erwin Chargaff proposed two main rules in his lifetime which were appropriately named Chargaff's rules. The first and best known achievement was to show that in natural DNA the number of guanine units equals the number of cytosine units and the number of adenine units equals the number of thymine units. The second of Chargaff's rules is that the composition of DNA varies from one species to another, in particular in the relative amounts of A, G, T, and C bases. Such evidence of molecular diversity, which had been presumed absent from DNA, made DNA a more credible candidate for the genetic material than protein.


What are the four nitrogen bases in DNA?

The four nitrogen bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G). These bases pair up in specific combinations; A pairs with T, and C pairs with G.


What statement about Chargaffs rules is carrect?

Observations by Erwin Chargaff that concentrations of the four nucleotide bases differ among species. Within a species, the concentrations of adenine and thymine are always about the same and the concentrations of cytosine and guanine are always about the same. In each species, the amount of adenine equals the amount of thymine. The amount of guanine equals the amount of cytosine.


Nitrogen Bases in DNA?

Macromolecules In addition to the C, the H and the O, they also contain nitrogen (N). All of these elements are arranged to form amino acids. Amino acids are the building blocks ... But, you notice that you have two types of nucleic acids. ... These nitrogenous bases pair up to help form the famous double helix you may have heard about with DNA.


Does DNA have thymine as one of its four nucleotide bases"?

Yes, DNA does have thymine as one of its four nucleotide bases.


Does a prism have more than two bases?

yes.prism has four bases.


Which is not one of the four bases of DNA?

There are five bases in DNA: adenine (A), cytosine (C), guanine (G), thymine (T), and uracil (U).


What are the four bases of a DNA molecule called?

The four bases of a DNA molecule are called adenine, thymine, cytosine, and guanine.


Can a prism have two bases and four faces?

Sometimes,only because,a rectangular prism has two bases and four faces, but a triangular prism has two bases and three faces.


How many bases are there?

In Baseball there are four bases: first, second, third, and home.


Four nitrogen bases in RNA?

The four nitrogenous bases in RNA are adenosine, guanine, uracil and cytosine.


What four nitrogenous bases does DNA contain?

The four nitrogenous bases in in DNA are adenine, thymine, cytosine, and guanine.