NEET 2004 · Class 12

Human Health and Disease

73. Which of the following statements is not true for retroviruses?

  1. (A)DNA is not present at any stage in the life cycle of retroviruses.
  2. (B)Retroviruses carry gene for RNA-dependent DNA polymerase.
  3. (C)The genetic material in mature retroviruses is RNA.
  4. (D)Retroviruses are causative agents for certain kinds of cancer in man.

The NCERT line that answers it

Verbatim line

After getting into the body of the person, the virus enters into macrophages where RNA genome of the virus replicates to form viral DNA with the help of the enzyme reverse transcriptase.

Chapter
Human Health and Disease
Section
7.3 AIDS
Page
13
Words matched
32 of 32

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that retrovirus RNA replicates to form viral DNA, which directly contradicts option A's claim that DNA is not present at any stage in the retrovirus life cycle.

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