What would be the length of DNA containing 10000 base pairs?

Options

A. 68000Å
B. 34000Å
C. 10000Å
D. l m

Answer

To find the length of DNA containing 10,000 base pairs, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the relationship between base pairs and length**: Each base pair in DNA contributes a certain length to the overall DNA molecule. The standard length contribution per base pair is approximately 3.4 angstroms.

2. **Identify the number of base pairs**: In this case, we have 10,000 base pairs.

3. **Use the formula to calculate the length**: The formula to calculate the total length of DNA is:
\[ \text{Length of DNA (in angstroms)} = \text{Number of base pairs} \times 3.4 \text{ angstroms} \]

4. **Substitute the values into the formula**:
\[ \text{Length of DNA} = 10,000 \text{ base pairs} \times 3.4 \text{ angstroms/base pair} \]

5. **Perform the multiplication**:
\[ \text{Length of DNA} = 34,000 \text{ angstroms} \]

6. **Convert angstroms to a more common unit if necessary**: Since 1 angstrom is \(10^{-10}\) meters, we can express the length in meters if needed, but in this case, we will keep it in angstroms as the question is asked in that unit.

7. **Conclusion**: The length of DNA containing 10,000 base pairs is 34,000 angstroms.

### Final Answer:
The length of DNA containing 10,000 base pairs is **34,000 angstroms** (Option B).

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