Question

Double helical structure of DNA was given by

• A. Frederick Meisher
• B. J.D. Watson
• C. F.H.C. Crick
• D. Watson and Crick

Answer 1

The correct option is D

Watson and Crick

The correct option is D:

Explanation of the correct option

1. Francis Crick and James Watson published the first description of DNA's molecular structure, which they named a "double helix," in the journal Nature in 1953.
2. Watson, Crick, and their colleague Maurice Wilkins were awarded the Nobel Prize in Physiology or Medicine in 1962 for this groundbreaking discovery.

Explanation of the incorrect options

Option A:

1. 15th concept The nucleus of a cell contains DNA and proteins, which are important components.
2. Friedrick Meisher was the first to separate "nuclein," DNA with related proteins, from cell nuclei in 1869.
3. He was the first person to recognize DNA as a separate molecule.

Option B:

1. J.D. Watson is an American geneticist and biophysicist who was instrumental in determining the chemical structure of deoxyribonucleic acid (DNA), the substance that underpins inheritance.

Option C:

1. Francis Harry Compton Crick was an English molecular biologist, biophysicist, and neuroscientist who lived from June 8, 1916, to July 28, 2004.
2. He, along with James Watson, Maurice Wilkins, and Rosalind Franklin, were instrumental in decoding the DNA molecule's helical structure.
3. The Nature study by Crick and Watson in 1953 set the foundation for understanding DNA structure and function.
   Double helical structure of DNA was given by Watson and Crick.