Who among the following scientist had no

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Target Exam

CUET

Subject

Biology

Chapter

Molecular Basis of Inheritance

Question:

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

Options:

Erwin Chargaff.

James Watson and Francis Crick.

Maurice Wilkins and Rosalind Franklin .

Meselson and Stahl.

Correct Answer:

Meselson and Stahl.

Explanation:

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

Erwin Chargaff contributed by discovering the base-pairing rules (A=T, G≡C), which were crucial for the double helix model.
James Watson and Francis Crick are credited with developing the double helix structure of DNA in 1953.
Maurice Wilkins and Rosalind Franklin provided key X-ray crystallography data that helped Watson and Crick determine the structure.
Meselson and Stahl, however, are known for their work on proving the semi-conservative replication of DNA, not for contributing to the double helix model.