Watson Crick Franklin and Wilkins

Franklin and Wilkins provided X-ray crystallography data showing that DNA had a helical structure. This information was crucial for Watson and Crick to come up with their model of the double helix structure of DNA.

Watson and Crick determined that DNA molecules are in the shape of a double helix, which resembles a twisted ladder. The double helix structure consists of two strands that are connected by complementary base pairs.

A DNA molecule is composed of nucleotides, which consist of a phosphate group, a sugar (deoxyribose), and a nitrogenous base (adenine, thymine, guanine, or cytosine). The arrangement of these nucleotides forms the double helix structure of DNA.

DNA is a chemical, the initials stand for deoxyribonucleic acid. It can form a variety of structures, but in the chromosomes it takes on the interesting structure of the double helix (two helices winding together in opposite directions). These helices form long strands which are then folded up into tangles, in the cell nucleus. It's not very neat, but it works anyway.

Dr. James Watson (born April 6, 1928) is a Nobel prize winner for his DNA research.

However, his public comments about some aspects of human genetics, involving gender, race, and homosexuality, have caused him some embarassment and lost prestige. On October 25, 2007, Watson was compelled to retire as chancellor of the Cold Spring Harbor Laboratory on New York's Long Island and from its board of directors. He continues to lecture and speak on a less frequent basis.

1. Rosalind Franklin's X-ray diffraction images of DNA provided the crucial information about the helical structure of DNA, including the angle of the helix and the repeating pattern of the molecule.
2. Erwin Chargaff's discovery that the amount of adenine is equal to the amount of thymine, and the amount of cytosine is equal to the amount of guanine in DNA, helped Watson and Crick understand the base pairings in DNA.

Once-useful structures refer to buildings, infrastructure, or tools that were previously functional but have now become obsolete, abandoned, or no longer serve their original purpose. These structures may hold historical or architectural significance and may require preservation or repurposing to prevent deterioration.

X-ray photographs taken by Rosalind Franklin provided key information about the structure of DNA, suggesting a helical shape with a repeating pattern. Watson and Crick used this data to build a model of the DNA molecule, leading to their discovery of the double helix structure. Franklin's work was crucial in providing the evidence necessary for Watson and Crick to propose their groundbreaking model.

Erwin Chargaff discovered that the amount of adenine (A) is equal to the amount of thymine (T), and the amount of guanine (G) is equal to the amount of cytosine (C) in DNA. This finding, known as Chargaff's rules, provided the crucial clue that led to the discovery of DNA's double helix structure by Watson and Crick.

Rosalind Franklin made an X-ray crystallography showing a DNA molecule. Then, Watson and Crick used hers to create their own model using DNA's structure. Their model is still correct today and many people use it and look at it for reference.

The discovery of the structure of DNA by James Watson and Francis Crick in 1953 paved the way for advancements in biotechnology, genetic engineering, and personalized medicine. Technologies such as CRISPR-Cas9 gene editing, DNA sequencing, and pharmaceutical research have all been made possible by this landmark discovery.

No, James Watson is primarily known for his work on the structure of DNA, along with Francis Crick and Rosalind Franklin. The structure of Tobacco Mosaic Virus (TMV) was studied by another scientist named Wendell Stanley, who won the Nobel Prize in Chemistry in 1946 for his work on TMV.

Some famous scientist duos include Marie and Pierre Curie who discovered radioactivity, Watson and Crick who discovered the structure of DNA, and Marie and Pierre Curie who discovered radioactivity.

The molecular structure of DNA was deduced by James Watson and Francis Crick in 1953. They proposed the double helix structure based on X-ray diffraction data collected by Rosalind Franklin and Maurice Wilkins, along with their own model building efforts. This discovery revolutionized our understanding of genetics and laid the foundation for further research in molecular biology.

Rosalind Franklin's X-ray diffraction images which provided key insights into the structure of DNA. Maurice Wilkins also contributed to the discovery by working on the same subject as Franklin. Linus Pauling's work on the nature of chemical bonds was also influential in shaping Watson and Crick's model of DNA.

Watson and Crick were credited for discovering the structure of DNA because they were the first to propose the double helix structure of DNA in 1953, which was based on X-ray diffraction data collected by Rosalind Franklin and Maurice Wilkins. Their model provided a comprehensive explanation of how genetic information is stored and transferred in living organisms.

Rosalind Franklin is best known for her X-ray crystallography image which were key in figuring out the structure of the double helix, credited to Francis Crick and James Watson and Brian Wilkin. She also helped the project by offering her opinion on the previous structures Crick and Watson and Wilkin created (the rumor is that when she didn't say anything about the double helix, Crick and Watson realized that they could be correct).

Franklin played a monumental part in the discovery which led to a Nobel Prize, but she wasn't eligible to win because she was dead due to complications from ovarian cancer at the age of 37 by the time it was awarded (prizes aren't awarded posthumously, nor for more than three recipients).

She was also know for being, for lack of a better word, a bit of a cow (thanks, in part, to Watson's depictions of her in 'The Double Helix').

The famous X-ray crystallography image [related links]

Rosalind Franklin was a scientist who contributed to the discovery of the DNA double helix structure through her X-ray diffraction images of DNA. Her work provided crucial evidence that helped Watson and Crick propose their model of DNA structure. This discovery has had a significant impact on genetics and our understanding of heredity.

Discovered DNA, professor of Biology at Harvard , Nobel prize in 1962, wrote a book called THE DOUBLE HELIX , uncovered the molecular nature of cancer, ran the human genome project and identified 50,000 to 100,000 genes.

Nuclear energy is important because it is a low-carbon energy source that can help reduce greenhouse gas emissions. It also provides a reliable and consistent source of electricity, has a high energy density, and can contribute to energy security by reducing dependence on fossil fuels. Additionally, nuclear technology has applications in areas such as medicine, agriculture, and industry.

Chargaff's rules helped Watson and Crick understand the structure of DNA by revealing that the amount of adenine (A) is equal to thymine (T), and the amount of guanine (G) is equal to cytosine (C). This allowed them to deduce the complementary base pairing in DNA and ultimately propose the double-helix structure of DNA.

Chargaff's rules provided key information about the base composition of DNA, which guided Watson and Crick's understanding of the structure of DNA. Specifically, Chargaff's rules stated that the amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine. This information was crucial in helping Watson and Crick establish the complementary base pairing necessary for the double helix structure of DNA.

Watson and Crick discovered the structure of DNA. They proposed the double helix model, which showed how DNA is organized in a twisted ladder-like form with a sugar-phosphate backbone and paired nucleotide bases. This discovery laid the foundation for understanding how genetic information is stored and transmitted in living organisms.

"No but Karry Mullis who is credited with the invention of the polymerase chain reaction (PCR) has said he got the idea while on LSD. PCR has allowed huge advances in DNA technology including DNA matching in crimes." -- Beaker119

"No" is a bit too quick of an answer. According to his friend and biographer Matt Ridley, the answer is "yes." (See New York Times article: http://www.nytimes.com/2006/07/11/science/11book.html)

I know of no first-hand sources (e.g. writings or interviews with Crick himself) where he claims to have used LSD, but there is the following quote from the British reporter Alun Rees:

"He listened with rapt, amused attention to what I told him about the role of LSD in his Nobel Prize-winning discovery. He gave no intimation of surprise. When I had finished, he said: 'Print a word of it and I'll sue.'"

I think the best answer is "maybe."

Chargaff's rules stated that the amount of adenine should roughly equal thymine, and cytosine should roughly equal guanine in DNA. This helped Watson and Crick understand the base pairing rules, which were crucial in developing their double helix model of DNA.