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14y ago

Because the base pairs of a AT and CG are compose of a purine ( a two ringed structure) with a pyrimadine ( a single ring structure). The combination of purine and pyrimidine always form a constant distance of 3 rings across.

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Q: How does the diameter of DNA stay constant?
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Why the value of pi is constant?

The value of pi is constant. It is calculated by dividing the circumference of a circle by its diameter. As the circle's circumference grows, the diameter grows at the same rate, proportionally. This means that the circumference divided by the diameter (if measured precisely) will always yield pi. If it does not, it is not a perfect circle. The ratio between the circumference and the diameter of a circle will always stay the same, no matter how you change the size of the circle.


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