Question

Single stranded nucleic acid is found in

• A. E. coli
• B. phi X 174
• C. T${}_2$
• D. T${}_4$

Answer 1

Answer: (B)

phi X 174

Phi x 174 virus is a bacteriophage (that infects E.coli). It has circular ssDNA genome. It was first DNA-based genome sequenced by Fred Sanger in 1977. Thus, the correct option is A.