DNA IS COMPOSED OF MANY MOLECULES STRUNG TOGETHER IN A VERY…
DNA IS COMPOSED OF MANY MOLECULES STRUNG TOGETHER IN A VERY LONG CHAIN. THE “DOUBLE-HELIX” PORTION OF THIS CHAIN (THE RAILS) IS MADE OF: 1 SUGAR-PHOSPHATE MOLECULES 2 NITROGENOUS BASES 3 PURINES AND PYRIMIDINES
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