Question

Which of the following statements is (are) true about retroviruses?

A. They contain a single, positive-stranded ribonucleic acid (RNA)
B. They contain a special enzyme called reverse transcriptase in their core
C. They reverse the normal process of transcription in which DNA is converted to RNA
D. All of the above

Answer 1

All of the statements about retroviruses are true: they contain a single, positive-stranded RNA, a special enzyme called reverse transcriptase, and they reverse the normal process of transcription.

Step-by-step explanation:

All of the above

All of the statements about retroviruses are true. Retroviruses contain a single, positive-stranded RNA molecule as their genetic material. They also contain a special enzyme called reverse transcriptase in their core, which allows them to convert their RNA genome into DNA. This process, known as reverse transcription, is a deviation from the normal process of transcription in which DNA is converted to RNA.