Question

DNA replication results in two identical DNA molecules. What role do DNA helicases have in DNA replication?
A.
DNA helicases add nucleotides to the exposed nitrogen bases of the old DNA.
B.
DNA helicases hold the two strands of the old DNA apart and prevent them from reuniting.
C.
DNA helicases check the new DNA molecule for errors.
D.
DNA helicases break the hydrogen bonds in the DNA molecule.

Answer 1

Explanation:

B) DNA helicases hold the two strands of the old DNA apart and prevent them from reuniting.

Answer 2

Answer:

option D is the answer

DNA helicases break the hydrogen bonds in the DNA molecule