2016
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Single-helical structure
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Double-helical structure
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Triple-helical structure
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None of the above
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Detailed explanation-1: -The new research, conducted by leading scientists at the University of Sheffield, has revealed how branched DNA molecules are removed from the iconic double-helical structure –a process which scientists have been looking to unlock for over 20 years.
Detailed explanation-2: -Double helix, as related to genomics, is a term used to describe the physical structure of DNA. A DNA molecule is made up of two linked strands that wind around each other to resemble a twisted ladder in a helix-like shape. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups.
Detailed explanation-3: -X-ray diffraction of DNA crystals results in a cross shape on the X-ray film, which is typical of a molecule with a helix shape. James and Francis used evidence shared by others, particularly Rosalind Franklin and Maurice Wilkins, to determine the shape of DNA. Rosalind worked with Maurice at King’s College London.