GK
INVENTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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discovery
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invention
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Either A or B
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None of the above
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Detailed explanation-1: -These four scientists-Crick, Franklin, Watson, and Wilkins-codiscovered the double-helix structure of DNA, which formed the basis for modern biotechnology.
Detailed explanation-2: -Albrecht Kossel isolated the five nucleotide bases that are the building blocks of DNA and RNA: adenine, cytosine, guanine, thymine and uracil. In 1881 Albrecht identified nuclein as a nucleic acid and provided its present chemical name, deoxyribonucleic acid (DNA).
Detailed explanation-3: -How Was DNA Discovered? DNA was discovered in 1869 by Swiss researcher Friedrich Miescher, who was originally trying to study the composition of lymphoid cells (white blood cells). Instead, he isolated a new molecule he called nuclein (DNA with associated proteins) from a cell nucleus.