Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Which of the following statements regarding a DNA segment 1,000 base pair long are correct? (1) It measures 3,400Å (2) It has 10 complete turns (3) The RNA synthesised from it carries nucleotides (4) It has 100 nucleotidesA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: D
Solution :
The two strands are held together by hydrogen bonds between the nitrogenous bases, which are paired in the interior of the double helix. The base pairs are 0.34 nm apart. There are ten pairs per turn of the helix.
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