Biology 3rd Edition by Peter Russell, Paul Hertz, Beverly McMillan

تمرين 1

The amino acid sequences of the DNA polymerases found in bacteria show little similarity to those of the DNA polymerases found in eukaryotes and in archaea.By contrast, the amino acid sequences of the DNA polymerases of eukaryotes and archaea show a high degree of similarity.Interpret these observations from an evolutionary point of view.