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NEET2012ZoologyHuman Health and DiseasesActual

Assertion : AIDS is caused by the HIV, a retro-virus. Reason : Retroviruses have RNA genome.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion
  3. CIf assertion is true but reason is false
  4. DIf both assertion and reason are false

Correct answer

B. If both assertion and reason are true but reason is not the correct explanation of assertion

Step-by-step solution

(b) : Retrovirus is an RNA-containing virus that converts its RNA into DNA by means of the enzyme reverse transcriptase. This enables it to become integrated into its host's DNA. Some retroviruses can cause cancer in animals they contain oncogenes (cancer-causing genes), which are activated when the virus enters its host cell and starts to replicate. The special properties of retroviruses make them useful as vectors for inserting genetic material into eukaryotic cells. The best-known retrovirus is HIV, responsible

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