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Systematics Viruses Viroids Prions - Questions and Answers

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236. What is not true of retrovirus
A. DNA has no role in life cycle
B. There is a gene for RNA dependent DNA polymerase
C. Genetic material is RNA
D. They are causative agents for certain cancers
Explanation:
237. Genetic material of retroviruses is
A. DNA
B. RNA
C. DNA and RNA
D. Nucleoprotein complexes
Explanation:
238. Given below are assertion and reason. Point out. Assertion . Severe Acute Respiratory Syndrome (SARS) originated in China. Reason, China is the most populated country of the world
A. both are true with reason being correct explanation
B. both true but reason not correct explanation
C. assertion true but reason wrong
D. both are wrong
Explanation:
239. Cryptogram of TMV is
A. R/1, 1/8, S/S, S/Af
B. R/2, 1/5, E/P, O/S
C. R/1, 2/5, E/E, S/O
D. R/1, 2/7, E/E, S/O
Explanation:
240. In Reovirus, genetic material is
A. ss DNA
B. ds DNA
C. ss RNA
D. ds RNA
Explanation:
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