are there any alternative structures?
Yes, DNA exists in many possible conformations that include A-DNA, B-DNA, and Z-DNA forms
DNA
DNA exists in many possible conformations that include A-DNA, B-DNA, and Z-DNA forms, although, only B-DNA and Z-DNA have been directly observed in functional organisms.
the structure found in the cell that contains strands of dna is called a(n) nuclei what is its full form? Deoxyribonucleic acid what is base pairing? In a DNA double helix, each type of nucleobase on one strand bonds with just one type of nucleobase on the other strand, his is called complementary base pairing.
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DNA [SEP] Alternative DNA structures
DNA exists in many possible conformations that include A-DNA, B-DNA, and Z-DNA forms, although, only B-DNA and Z-DNA have been directly observed in functional organisms. The conformation that DNA adopts depends on the hydration level, DNA sequence, the amount and direction of supercoiling, chemical modifications of the bases, the type and concentration of metal ions, and the presence of polyamines in solution. The first published reports of A-DNA X-ray diffraction patterns—and also B-DNA—used analyses based on Patterson transforms that provided only a limited amount of structural information for oriented fibers of DNA. An alternative analysis was then proposed by Wilkins "et al.", in 1953, for the "in vivo" B-DNA X-ray diffraction-scattering patterns of highly hydrated DNA fibers in terms of squares of Bessel functions.