The Discovery In 1953 Of The Double Helix, The Twisted-Ladder

This paper explores the history and some interesting facts about DNA. The last couple centuries have seen an exponential growth in our knowledge of DNA. The history of the DNA can be traced back to multiple devoted scientist. This article attempts to summarize, and review the basic history of DNA while providing some fascinating information about it.

In the early 1950s, the race to find the structure of DNA was in full swing. The search was being conducted at three different colleges. At the California Institute of Technology, Linus Pauling,

Over the course of the modern age, the human body was still a mystery waiting to be solved. The body contains secrets one can only hope to discover. Over the twentieth century, scientists tried to understand one of the most complex concepts in the biological field. DNA (Deoxyribonucleic acid) was at the forefront of research. Several theories claimed to have solved the structural concept of DNA. However, it was not until Francis Crick and James D. Watson discovered the true structure, the double helix. However, many potential models of DNA had passed through the biology field until eventual lose of credibility. The past models would contain a fixed detail that would make the entire concept invalid. In James D. Watson book, The Double Helix, he illustrates his path amid incorrect theories until he reaches the model that is taught around the world today.

2. What role did James Watson & Francis Crick play in our understanding of DNA’s structure? They discovered the 3D structure.

In Time Magazine an article states On February 28 1953, James Watson and Francis Crick broke the DNA code and discovered that the DNA strand is double helix and forms like a ladder. They found that cytosine and guanine were paired together and that adenine and thymine were paired. They discovered the building block of life (Wright, 1999). DNA is found in all living organisms.

Watson and Crick discovered that cell’s nucleuses contained a molecule that was called deoxyribonucleic acid, or DNA. The clues from the diary are: “Even us lab boys knew that there had been gossip going around the labs that Crick and Watson had been trying to solve the structure of this new-fangled molecule called DNA – deoxyribonucleic acid – but discovering the secret of life itself?”

The discovery and foundation of the double helix structure of DNA, a hereditary molecular structure, sparked science, scientific research, and the advancement of opportunities. Although this took a lot of effort and time, this breakthrough discovery has changed the subjects of science, chemistry, biology, anatomy, and physics completely around. Although this discovery has prompted science in our world today, little do we know a young man tried to stop this. The Double Helix by James D. Watson tells us the story of this great discovery throughout our history. Throughout this book there is so many key relevant topics that I can

Scientist in early 1950s James Watson a biologist from Indiana University and Francis Crick a physicist were working at lab to discover the structure of DNA. The primary technique for structural analysis of biological molecules is X-rays. The wave length of X-ray is about the same as the space between the atoms in crystal matters. We learn and know that genetic information was carried on chromosomes made up of DNA and protein. Maurice decided and taken the first x-ray picture of DNA that lead him to suggest the DNA structure might be a helix. Watson was able to rely on Wilkins' research. If he had not, he may have not been the one to discover the structure of DNA. The biggest thing I learned from my research is that scientists can’t make discoveries

Two people not in the Cavendish lab, but equally as involved in the discovery of the structure of DNA were Maurice Wilkins and Rosalind Franklin, from King's College in London. While writing about many of the afore-mentioned individuals Watson emitted a constant attitude of indifference and his actions toward Rosalind Franklin equally reflected that indifference.

Rosalind Franklin was able to take an x-ray image of the DNA strand and see how it was shaped. After seeing her work James Watson and Francis Crick took her image and began researching into it. This led them to discover the double helix.

# Describe the contributions of each of the following to the discovery of the structure of DNA -

Watson and Crick discovered that cell’s nucleuses contained a molecule that was called deoxyribonucleic acid, or DNA. The clues from the diary are: “Even us lab boys knew that there had been gossip going around the labs that Crick and Watson had been trying to solve the structure of this new-fangled molecule called DNA – deoxyribonucleic acid – but discovering the secret of life itself?”

In 1944 Chargaff began his investigations into the composition of DNA. By 1950 he had experimentally determined certain crucial facts that led directly to the discovery of its molecular structure. He created three rules, known as Chargaff's Rules, which describes three fundamental facts of DNA. The first is that the amount of adenine(A) always equals the amount of thymine(T). Second, the amount of guanine(G) always equals the amount of cytosine(C). Finally, the amount of purines(A+G) always equals the amount of pyrimidines(T+C).

1953, Watson and Crick discovered one of the biggest mysteries of the human body; the DNA

Rosalind Franklin’s work on DNA was crucial in discovering the composition of the human body as a whole. Her x-ray photo revealed a double helix structure and she also discovered the A and B form of DNA. She worked through the adversity of being a female in a predominately male dominated realm and made remarkable findings that were eventually stolen. She adapted to a new lab with antiquated technology. Before this discovery, the structure of DNA was thought to be simple. Scientist, Watson and Crick, started with the wrong structure of DNA from a misinterpretation of notes from one of Franklin’s presentations. Unlike Watson and Crick, Rosalind Franklin could explain DNA and how it worked.