The article, “Structure for Deoxyribose Nucleic Acid”, written by Watson and Crick, was a stepping stone on the path of discovery for the building blocks of life. In this article, Watson and Crick briefly state previous theories on the structure of DNA were incorrect in certain aspects but correct in others. Watson and Crick later went on to describe their version of a double helical structured DNA. They indirectly state the importance of their discovery which later them to winning the noble prize. Previous to this publication, there were at least two other theories on the structure of deoxyribose nucleic acid. The first theory was that the structure “consisted of three intertwined chains, with the phosphates near the fiber axis, and the bases on the outside.” (Watson and Crick, 4/2/53) This theory had been proposed by Pauling and Corey. Later a second theory was mentioned, but not very dwelled upon, in Watson and Crick’s paper.
Fraser had also suggested a triple wined chain. However, Fraser also suggested that “the phosphates are on the outside and the bases on the inside, linked together by hydrogen bonds.” (Watson and Crick, 4/2/53) Watson and Crick developed a double chained helix with the bases inside and the phosphates outside. By studying the Pauling and Corey theory, they discovered that where they had the phosphates and the bases were incorrectly placed because they would repel each other, therefore discovered the correct diagram. They also were able to correctly determine the correct base pairs which were adenine with thymine and guanine with cytosine. In their structure they show the double stranded helix twisted around the axis in which the base pairs are perpendicular to the axis. This determination of the base pairs and observation of the sequence is very important to the structure of DNA because in those specific pairings, it is suggested as a possible copying mechanism for the genetic material.
The Essay on Chance Or Planning Watson And Crick
Chance or Planning Maureen C. Lett HSS 208-Dr. O'HaraApril 17, 1996 Intelligence and planning are necessary factors in scientific research, however chance and luck are also important and somewhat necessary factors. The Autobiography of Charles Darwin and the memoir, The Double Helix, written by James Watson, prove this assertion. Charles Darwin, James Watson and Francis Crick were all intelligent ...
This last statement is where Watson and Crick state that they have now discovered the key to the understanding of life, “It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material.” (Watson an Crick, 4/2/53) This copying mechanism for the genetic material would be the building block for all life. Science could begin to understand complex codes and structures, which code for genetic individual traits. Watson and Crick basically tell that this is the blueprint for everything. This paper of Watson and Crick’s discovery won the noble prize. This would be because they discovered the blueprint. They basically put the scientific world on the correct path for the breakdown, the study, and eventually a complete understanding of DNA.
From the time of the discovery and on, science has gone on to decode this complex chain of genetic code. By understanding this genetic code, we can foresee every characteristic, internal and external, on anything. Through understanding this genetic code and which genes control certain traits, we are trying to control those genes that control those traits, to try to create a better being. Bibliography “Structure for Deoxyribose Nucleic Acid” by Watson and Crick.
