In the double helix modle of DNA , how far is each base pair from the next base pair

Options

A. 0.034nm
B. 3.4 nm
C. 0.34 nm
D. 34 nm

Answer

To answer the question about the distance between each base pair in the double helix model of DNA, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding DNA Structure**: The DNA molecule consists of two strands that form a double helix. Each strand runs in opposite directions, known as anti-parallel orientation.

2. **Identifying Base Pairs**: The base pairs in DNA are formed by nitrogenous bases (adenine, thymine, guanine, and cytosine) that are connected by hydrogen bonds.

3. **Measuring Distance**: The distance between each base pair in the DNA structure is a crucial measurement.

4. **Finding the Value**: The distance between two adjacent base pairs is approximately 3.4 angstroms (Å) or 0.34 nanometers (nm).

5. **Conclusion**: Therefore, the distance between each base pair from the next base pair in the double helix model of DNA is 0.34 nm (or 3.4 Å).

### Final Answer:
The distance between each base pair in the double helix model of DNA is **0.34 nanometers (nm)** or **3.4 angstroms (Å)**.

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