Pregunta:
What is the main structure of DNA?
Autor: H KRespuesta:
Two long antiparallel polynucleotide chains coiled around a central axis (hydrophobic nitrogenous bases) forming a right-handed double helical shape, H-bonded in the middle, distance between two nucleotides is 0.34 nm, distance of a complete turn in helical structure is 3.4nm (10 nucleotides) diameter of 2nm
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