Structure Of Dna And Rna

The assertion is correct because RNA typically does adopt secondary structures such as the double-stranded forms, albeit in some cases, it's single-stranded with specific regions that form helices. However, the reason is incorrect. RNA does not typically form a double helix like DNA. While RNA may have some double-stranded structures in certain conditions, it usually forms a single helix. DNA, not RNA, is the structure that typically forms a double helix.
Thus, the assertion is correct, but the reason is incorrect.