With 10 base pairs per complete helical turn of 3.4 nm, the step distance between consecutive base pairs is 3.4/10=0.34 nm.
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21. The primary reason why a purine base cannot pair with another purine base inside a stable DNA double helix is that such an orientation would
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24. An increase in the collective ratio of G-C base pairs relative to A-T base pairs within a DNA fragment results in
