Which of the following describes a retrovirus?
Which of the following describes a retrovirus.
The virus uses reverse transcriptase to make DNA from an RNA template, the reverse of the normal process of gene expression.
The positive-strand RNA virus can serve as a template for protein synthesis..
How is a retrovirus different from a virus?
Retroviruses differ from other viruses in that each virion contains two complete copies of the single-stranded RNA genome.
Why is a retrovirus so dangerous?
The ability of retroviruses to integrate this DNA into the host cell’s DNA increases the chances of causing cancer or other diseases. For example, if the retroviral DNA is inserted into the middle of one of the host cell’s genes, that gene may no longer be functional, leading to disease.
What exactly is a retrovirus quizlet?
Retrovirus. infectious particles. consist of an RNA genome packaged in a protein capsid, surrounded by a lipid envelope. Reverse transcriptase (RTase) causes synthesis of a complementary DNA molecule (cDNA) usingvirus RNA as a template.
How do retroviruses express genes?
Retroviruses, however, function differently. Their RNA is reverse-transcribed into DNA, which is integrated into the host cell’s genome (when it becomes a provirus), and then undergoes the usual transcription and translation processes to express the genes carried by the virus.
What do both retroviruses and retrotransposons do?
Retroviruses are capable of moving between cells, whereas LTR retrotransposons can only insert new copies into the genome present within the same cell, and rely mostly on vertical transmission through generations.