Question

which structural feature of dna allows the easy separation of the two dna strands during dna replication?○ helical shape○ hydrogen bonding○ sugar-phosphate backbone○ complementary base pairing

Explanation:

The two DNA strands are held together by weak hydrogen bonds between complementary nitrogenous bases. These weak bonds can be easily broken to separate the strands during processes like DNA replication, while other features (helical shape, sugar-phosphate backbone, complementary base pairing rules) do not directly enable easy strand separation.

Answer:

hydrogen bonding