which structural characteristic is seen in rna but not in dna?\no double strands\no a single strand\no…

which structural characteristic is seen in rna but not in dna?\no double strands\no a single strand\no chains of nucleotides\no a helical shape
Answer
Brief Explanations:
DNA is usually double - stranded, while RNA is often single - stranded. Both are made of chains of nucleotides and can have helical shapes.
Answer:
B. a single strand