Pre-Boards 2020|Double Helix Model Of DNA

One of the hallmarks of famous Double Helix model of DNA was

What is the major hallmark of double helix model of DNA given by Watson and crick?

In a DNA double helix :

The double helix model of DNA was proposed by

DNA is double helix and :

Who amongst the following scientists had no contribution in the development of the double helix model for the structure of DNA ?

Who amongst the following scientists had no contribution in the development of the double helix model for the structure of DNA