Question

during dna replication in a human cell, 6 billion bases must be paired properly. which characteristic of dna best allows for high levels of accuracy during this process? presence of ribose in the backbone base pairing according to certain rules single - helix shape ion channels

Explanation:

• Presence of ribose in the backbone: DNA has deoxyribose, not ribose. Ribose is in RNA. So this is incorrect.
• Base pairing according to certain rules: In DNA, adenine (A) pairs with thymine (T) and cytosine (C) pairs with guanine (G). This complementary base - pairing ensures accuracy during replication.
• Single - helix shape: DNA has a double - helix shape. So this is wrong.
• Ion channels: Ion channels are related to the movement of ions across membranes, not to DNA replication accuracy.

Answer:

base pairing according to certain rules