Question

6. The model of the double-helix model of the DNA molecule resembles a twisted ladder.

2 points

What makes up the rungs of the twisted ladder?

DIM

a. paired phosphate groups

b. paired nitrogenous bases

c. paired sugars

d. hydrogen and oxygen atoms

Answers

GPT-4o mini
The rungs of the twisted ladder in the double-helix model of the DNA molecule are made up of:

**b. paired nitrogenous bases**

These bases pair together (adenine with thymine, and cytosine with guanine) to form the rungs of the helix.

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