Multiple choice

Retroviruses are implicated as a cause of cancer in man because they _____.

  1. carry genes for reverse transcriptase

  2. carry single stranded RNA in their genomes

  3. carry cellular protooncogenes in their genomes

  4. may carry viral oncogenes in their genomes

  5. carry double stranded DNA

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Retroviruses carry oncogenes, which are cancer causing genes in their genomes.