Q. Single stranded nucleic acid is found in :

 1234  225 Delhi UMET/DPMTDelhi UMET/DPMT 2003 Report Error

Solution:

The nucleic acid found in a virus can be UNA or RNA.
On the basis of number of strands present the viruses are categorised as-
(i) Single stranded DNA Bacteriophage , coliphage
(ii) Double stranded DNA-Adenovirus, coliphage , lambda coliphage
(iii) Single stranded RNA-TMV, influenza,
(iv) Double stranded RNA-Wound tumour virus, Reovirus etc.
The genetic material in E. coli is double stranded circular DNA.