Who among the following scientist had no contribution in the development of the double helix model for the structure of DN A ?

Meselson and Stahl.

The correct answer is Option (4)- Meselson and Stahl.

Meselson and Stahl contributed to the understanding of DNA replication with their experiment known as the Meselson-Stahl experiment. Their work provided evidence for semi-conservative DNA replication but did not directly contribute to the development of the double helix model for the structure of DNA.

Therefore, the correct answer is Meselson and Stahl.

In 1953 that James Watson and Francis Crick, based on the X-ray diffraction data produced by Maurice Wilkins and Rosalind Franklin, proposed a very simple but famous Double Helix model for the structure of DNA. This proposition was also based on the observation of Erwin Chargaff that for a double stranded DNA, the ratios between Adenine and Thymine and Guanine and Cytosine are constant and equals one.