Reverse transcriptase
Is the enzyme used to generate Complimentary DNA
From an RNA template

This is used by viruses
To replicate their genome

The complimentary DNA
Produces a single strand of RNA

As the virus passes through the ribosomes
Reverse Transcriptase produces a reverse
And complimentary strand of itself

They combine and form a double helix

The enzyme integrase then allows
This viral DNA to stick to the host DNA

The enzyme protease then produces a copy
Of the virus

Which becomes a viral chimeric DNA

Viruses are created in a lab
And then transcribed or read
Into the host DNA!