Question

which helps prevent errors in dna replication?
a. dna polymerase makes five dna molecules from each single strand, and keeps the best of the five.
b. dna is produced in the ribosomes.
c. dna polymerase checks the dna for errors.
d. there are no complementary base pairs in dna.

Explanation:

DNA polymerase has a proof - reading function during DNA replication. It checks the newly synthesized DNA for errors and corrects them. Option A is incorrect as DNA polymerase doesn't make five DNA molecules from each single strand and choose the best. DNA is produced in the nucleus (replication), not in ribosomes (where protein synthesis occurs), so B is wrong. DNA has complementary base pairs (A - T, G - C), making D incorrect.

Answer:

C. DNA polymerase checks the DNA for errors.