Polymerases Classification: DNA and RNA synthesis, cDNA synthesis

The enzymes which catalyzes the synthesis of nucleic acids (RNA or DNA)
These enzymes are classified into five categories based on their substrates
1. DNA dependent DNA polymerases- DNA Polymerases
2. DNA dependent RNA polymerases- RNA polymerases
3. RNA dependent RNA polymerases- RNA replicase
4.RNA dependent DNA polymerases- Reverse Transcriptase
5.Template independent DNA polymerase- Terminal deoxynucleotidyal transferase