Question

Nucleotide arrangement in DNA can be seen by

(a) X- ray crystallography

(b) electron microscope

(c) ultracentrifuge

(d) light microscope

Answer 1

Correct option (a) X- ray crystallography

Explanation

Astbury by his X-ray diffraction studies suggested 3-D configuration for DNA molecules which was confirmed by Wilkins and Franklin in 1952 and then in 1953 Watson and Crick designed the model of DNA molecule.