Question

What three observations have been made for all DNA polymerases?

Answer 1

DNA polymerases require a template strand, add nucleotides to the 3' end, and can only add to a pre-existing strand of nucleic acid.

Step-by-step explanation:

In DNA replication, there are three observations that have been made for all DNA polymerases:

1. All DNA polymerases require a template strand to synthesize a new complementary strand.
2. They grow new DNA by adding nucleotides to the 3' end of the growing DNA chain through condensation reactions.
3. All DNA polymerases can only add to a pre-existing strand of nucleic acid.

DNA polymerases play a crucial role in DNA replication by ensuring the accurate and efficient synthesis of new DNA strands.