Question

Which major concept of genetics was illustrated in the model designed by Watson and Crick?

• A. DNA exhibits a double helix structure.
• B. DNA was the molecule of heredity.
• C. DNA copies itself through semiconservative replication.
• D. Amino acids may have been the first biological molecules formed on Earth.

Answer 1

The correct option is A DNA exhibits a double helix structure.

Watson and Crick proposed a double helical structure of DNA which was based upon the results of Wilkins that shows from x-ray crystallography the structure of DNA.

Watson and Crick proposed that the structure is made up of the backbone of sugar and phosphate and bases are present in a right angle to it. The structure arranges itself in the form of a double helical structure of DNA. The structure was based upon the results of the X-ray crystallography which showed the equal amount of distance between the helical structures.

So, the correct option is 'DNA exhibits a double helix structure'