BIOMOLECULES AND ENZYMES

BIOLOGY

STRUCTURE OF NUCLEIC ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Who is responsible for discovering DNA base pairing rules?
A
J. Watson & F. Crick
B
O. Avery
C
R. Franklin
D
Chargaff
Explanation: 

Detailed explanation-1: -Erwin Chargaff found that in DNA, the ratios of adenine (A) to thymine (T) and guanine (G) to cytosine (C) are equal. This parity is obvious in the final DNA structure.

Detailed explanation-2: -As a biochemist at Columbia University in the 1940’s, Dr. Chargaff discovered regularities among the four chemical units of DNA known as bases, pointing directly to its role as the hereditary material of living organisms.

Detailed explanation-3: -15251. Discovering the rules of complementary base pairing, Erwin Chargaff. Erwin Chargaff talks about his discovery – a major step for building the DNA model.

Detailed explanation-4: -The discovery of DNA’s double-helix structure is largely credited to the scientists Watson and Crick, for which they won a Nobel Prize. However, the X-ray crystallography work of Rosalind Franklin and Erwin Chargaff’s work in discovering the composition of DNA were instrumental to the discovery of DNA’s structure.

Detailed explanation-5: -Erwin Chargaff was one of those men, making two discoveries that led James Watson and Francis Crick to the double helix structure of DNA. At first, Chargaff noticed that DNA – whether taken from a plant or animal – contained equal amounts of adenine and thymine and equal amounts of cytosine and guanine.

There is 1 question to complete.