Which of the following coliphage has tadpole shape?

Which of the following is the first step in replication by bacterial phages?

At what temperature incubation is required for the adsorption of phage T4 and DNA injection into E.coli?

The protein coat of the virus remains outside the host cell.

Which of the following enzymes transcribe late genes?

What is the colour of the plaque formed?

In which of the following method, the viral particles are transmitted through lysis of cell?

Which of the following is the characteristic of repressor protein?

cro gene is an example of an immunity repressor.

From which of the following animal was the material isolated which was used for the vaccination for the first time?

Vaccination was invented by ____________

Causative agent of tobacco mosaic disease was filterable.

Yellow fever virus can be attenuated by serial passage on cultures of ______________

Effective poliomyelitis vaccines were developed by culturing the virus of poliomyelitis on the kidney cells of which animal?

Translation of mRNA into proteins takes place in the ________________

Adenoviruses exhibit which of the following symmetry?

The fringes on animal viruses like influenza virus is made up of ______________

Animal and plant viruses contain both DNA and RNA in the same virion.

Parvoviruses contain how many genes?

In papovaviruses, DNA occurs in which of the following forms?

RNA in animal viruses exist as circular dsRNA.