Why DNA Not RNA as Genetic Material — NEET Biology
📚 Practice ConceptAnswer to some of the questions such as, why DNA is the predominant genetic material, whereas RNA performs dynamic functions of messenger and adapter has to be found from the differences between chemical structures of the two nucleic acid molecules.
Which of the above statements regarding the differences between DNA and RNA are NOT correct? S1: DNA is chemically less reactive and structurally more stable than RNA, partly due to the absence of a 2'-OH group in its sugar. S2: Both DNA and RNA are typically double-stranded molecules with similar overall helical structures. S3: DNA contains the nitrogenous base thymine, while RNA contains uracil at the corresponding position. S4: RNA is exclusively involved in protein synthesis as a messenger, adapter, and structural molecule, never acting as genetic material. S5: While both DNA and RNA can mutate, RNA mutates at a slower rate due to its less labile nature, making it a better choice for long-term genetic information storage.
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