Question

Single stranded $DNA$ as genetic material in $\varphi \times 174$ was discovered by

• A. Delbruck
• B. Saffarman and Morris
• C. Reed and Findley
• D. Sinsheimer

Answer 1

Answer: (D)

Sinsheimer

The phi X 174 (or ΦX174) bacteriophage is a single-stranded DNA (ssDNA) virus that infects Escherichia coli, and the first DNA-based genome to be sequenced. In 1962, Walter Fiers and Robert Sinsheimer demonstrated the structure of the DNA of bacteriophage ΦX174.

So the correct answer is option D.