Question

9. As per Chargaff's rule A+ G=T+.....
10. DNA is helical structure with diameter of ....
11. The distance between two nucleotides in DNA IS------​

Answer 1

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Answer 2

Answer:

9. Chargaff's rules state that DNA from any cell of any organism should have a 1:1 stoichiometric ratio (base pair rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.

10. The diameter of the helix is 20 Å.

11. Each turn of DNA is made up of 10.4 nucleotide pairs and the center-to-center distance between adjacent nucleotide pairs is 3.4 nm.

Explanation:

10. The helix can be virtually any length; when fully stretched, some DNA molecules are as much as 5 cm (2 inches!) long. The path taken by the two backbones forms a major (wider) groove (from "34 A" to the top of the arrow) and a minor (narrower) groove (the one below).

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