Question

The length of DNA segment having 44 base pairs is ......

• A. 149.2 Å
• B. 149.3 Å
• C. 149.4 Å
• D. 149.6 Å

Hint:

For DNA, every 10 base pairs contribute to approximately 34 Å in length. Multiply the number of base pairs by 3.4 to estimate the length in Å.

Answer 1

The Correct Option is D

Step 1: Understanding the DNA length.
For every 10 base pairs of DNA, the length of the DNA strand is approximately 34 Å (angstroms). Thus, for 44 base pairs, the length is calculated by multiplying 34 by 4.4, which gives 149.6 Å.
Step 2: Analyzing the options.
(A) 149.2 Å: This is incorrect, as it does not match the calculation for 44 base pairs.
(B) 149.3 Å: This is incorrect, it is very close but not the correct value.
(C) 149.4 Å: This is also incorrect, the correct value is 149.6 Å.
(D) 149.6 Å: Correct. This is the accurate length for a DNA segment with 44 base pairs. Step 3: Conclusion.
The correct answer is (D) 149.6 Å.