DNA polymerases (which include RT) share highly conserved structural features, which means that their active catalytic sites vary little from species to species, or even between DNA polymerases using DNA as a template, versus DNA polymerases using RNA as a template.
DNA polymerases (which include RT) possess highly conserved structural characteristics, indicating that their active catalytic sites exhibit minimal variation across species or even between DNA polymerases utilizing DNA versus RNA as a template.