Question

which helps prevent errors in dna replication?

a. each base can attach to only one other type of base.
b. dna contains no complementary base pairs.
c. ribosome enzymes prevent errors from happening.
d. helicase enzyme checks the dna for errors.

Explanation:

In DNA, base - pairing rules (A - T and G - C) ensure specificity. This means each base (e.g., adenine) can only pair with one other type (thymine). This specificity helps prevent errors in DNA replication. Option B is incorrect as DNA has complementary base pairs. Ribosome enzymes (Option C) are involved in translation (protein synthesis), not DNA replication error prevention. Helicase (Option D) unwinds DNA, it does not check for errors.

Answer:

A. Each base can attach to only one other type of base.