Human Health and Diseases Question 105
105. Which of the following statements is not true for retroviruses?
[2004]
(a) DNA is not present at any stage in the life cycle of retroviruses
(b) Retroviruses carry gene for RNAdependent DNA polymerase
(c) The genetic material in mature retroviruses is RNA
(d) Retroviruses are causative agents for certain kinds of cancer in man
Show Answer
Answer : a
Hints & Solutions
(a) Retroviruses have RNA as the genetic material and hence they exhibit reverse transcription whereby DNA is synthesized on RNA template. They have reverse transcriptase as the enzyme.
