Question

DNA was first discovered by
A. Beadle and Tatum
B. Watson and Crick
C. Friedrich Miescher
D. Kornberg

Answer 1

In 1869, while working under Ernst Hoppe-Seyler at the University of Tübingen, he found a substance containing both phosphorus and nitrogen in the cores of white platelets found in discharge. He is additionally known for his book 'De Inflammation Ossium Eorumque Anatome Generali'.

Complete answer:
In the 1860s, the atom is known as DNA which was first recognized by a Swiss physicist named Johann Friedrich Miescher. Johann set out to investigate the key segments of white platelets part of our body's resistant framework. The fundamental wellspring of these phones was discharge covered wraps gathered from a close-by clinical facility.
Johann completed tests utilizing salt answers to understand more about what makes up white platelets. He saw that when he added corrosive to an answer of the cells, a substance isolated from the arrangement. This substance at that point broke up again when an antacid was included.
While examining this substance he understood that it had unforeseen properties diverse from those of different proteins he knew about. Johann called this puzzling substance 'nuclein' because he trusted it had originated from the phone core. Obscure to him, Johann had found the sub-atomic premise of all life – DNA. He at that point set about discovering approaches to separate it in its unadulterated structure.

Hence, the correct answer is option (c).

Additional information:
Beadle and Tatum recognized bread shaped mutants that could not make explicit amino acids. In every one, a transformation had "broken" a chemical expected to fabricate a specific amino acid.
The revelation in 1953 of the twofold helix, the contorted stepping stool structure of deoxyribonucleic corrosive (DNA), by James Watson and Francis Crick, denoted an achievement throughout the entire existence of science and offered to ascend to current molecular science.
During an examination profession traversing over sixty years, Arthur Kornberg made numerous remarkable commitments to atomic science. He was the first to seclude DNA polymerase, the chemical that gathers DNA from its segments, and the first to combine DNA in a test tube, which procured him a Nobel Prize in 1959.

Note: The particle currently known as DNA was first recognized during the 1860s by a Swiss scientific expert called Johann Friedrich Miescher by the key segments of white platelets. Friedrich Miescher initially segregated nucleic acids from discharge cells indisposed of careful groups. The acidic substance that Miescher separated was called nuclein. It was, later on, demonstrated to be DNA.