What did James Watson and Francis Crick develop?

The 3-dimensional double helix structure of DNA, correctly elucidated by James Watson and Francis Crick. Complementary bases are held together as a pair by hydrogen bonds.

How did James Watson and Francis Crick contribute to the discovery of DNA?

Created by Rosalind Franklin using a technique called X-ray crystallography, it revealed the helical shape of the DNA molecule. Watson and Crick realized that DNA was made up of two chains of nucleotide pairs that encode the genetic information for all living things.

What did Rosalind Franklin Francis Crick and James Watson discover?

These four scientists—Watson, Crick, Franklin, and Wilkins—codiscovered the double-helix structure of DNA, which formed the basis for modern biotechnology.

What did James Watson and Francis Crick model of DNA?

In “A Structure of Deoxyribose Nucleic Acid,” Watson and Crick described DNA as a double helix that contained two long, helical strands wound together. In their model, each DNA strand contained individual units called bases, and the bases along one DNA strand matched the bases along the other DNA strand.

Why did Watson and Crick refer to the DNA molecule as a double helix?

In its natural state, each DNA molecule is actually composed of two single strands held together along their length with hydrogen bonds between the bases. Watson and Crick proposed that the DNA is made up of two strands that are twisted around each other to form a right-handed helix, called a double helix.

When did Rosalind Franklin discover double helix?

In late February 1953, Rosalind Franklin, a 33-year-old physical chemist working in the biophysics unit of King’s College in London, wrote in her notebooks that the structure of DNA had two chains. She had already worked out that the molecule had its phosphate groups on the outside and that DNA existed in two forms.

What was Francis Crick known for?

Francis Crick (1916-2004) was one of Britain’s great scientists. He is best known for his work with James Watson which led to the identification of the structure of DNA in 1953, drawing on the work of Maurice Wilkins, Rosalind Franklin and others.

How does James Watson characterize Rosalind Franklin in his book the double helix?

NARRATOR: In 1968, James Watson published The Double Helix, his personal account of the discovery of the structure of DNA. In his book, Watson casts Franklin as uncooperative, unattractive and “incompetent in interpreting X-ray pictures.” And yet, Watson admits he needs her findings.

Did Watson and Crick steal Rosalind Franklin’s data?

Widely published zoology professor and genetics scholar Matthew Cobb states that the idea that Watson and Crick stole Franklin’s data is false, as the information was not confidential. Cobb does agree that Franklin’s work was crucial; however, he does not challenge the Nobel Prize distribution.

Which statement best describes how Watson and Crick’s model used other scientists work to create a model of DNA?

Which statement best describes how Watson and Crick’s model used other scientists’ work to create a model of DNA? They used Chargaff’s rule to determine that it contains ribose sugar.