You are studying DNA replication using a strain of yeast whose DNA polymerase is reported to have an error rate of 10-6 bases per cell cycle. However, your analyses of DNA sequences after DNA replication indicate that the error rate is closer to 10-10. What may explain your results?
A) The yeast expresses high levels of DNA ligase.
B) The yeast has a mismatch repair system.
C) RNA polymerase has high fidelity.
D) The DNA polymerase can tolerate high temperatures.
E) The DNA polymerase is processive.