RNA occurs primarily as single stranded molecules that can give rise to _______ structures.

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RNA molecules are primarily single stranded, but can fold on themselves to form stem-loop structures. This occurs due to the complementarity of nucleotide bases, allowing for base pairing within the same molecule. Diploid and haploid refer to the number of sets of chromosomes in a cell, and is not relevant to RNA structure. Parallel and tautomeric are not terms commonly associated with RNA structure.

RNA Occurs Primarily as Single Stranded Molecules That Can Give