pleas help fill in the blanks 6. The structure of DNA is actually in a DOUBLE HELIX arrangement. These means that the two long chains of nucleotides are arranged in a spiral-like twisted ladder. The sides (or "uprights") of the ladder are made up of alternating "blank" and "blank" molecules. The steps (or"rungs") of the ladder are made up of "blank" "blank" pairs held together by hydrogen bonds.​

pleas help fill in the blanks 6 The structure of DNA is actually in a DOUBLE HELIX arrangement These means that the two long chains of nucleotides are arranged class=