Question

Double helical structure of DNA was proposed by

• A. Kornberg
• B. Nirenberg
• C. Watson and Crick
• D. Wilkins and Franklin

Answer 1

The correct option is C Watson and Crick

Double helical structure of DNA was proposed by Watson and Crick. DNA is made up of a nitrogenous base, phosphate, and sugar. DNA and RNA are the chain of polynucleotide which are joined by the phosphodiester bonds. The two nucleotide is linked by the phosphodiester bond. It is formed by the linkage between the 3' carbon atom of one sugar molecule and the 5' carbon atom of another. The two strands are antiparallel as one runs in 5'-3' direction as the 3' end of sugar is attached to the phosphorous and the other strand is complimentary which runs in 3'-5' direction where 5' end of sugar is attached to the phosphorous.

So, the correct answer is option C.