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Video Biología
"RNA Structure is a single strand composed of nucleotides. Unlike DNA it does not form a double helix shape, but it does contain a series of nitrogenous bases (adenine, uracil, guanine and cytosine). ...
Video Biología
"DNA structure is what is called a double helix. DNA consists of two strands of nuclotides connected by pairs of bases. These strands "point" in opposite directions and are twisted into a helix shape. ...
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