Reverse Transcription and Retroviruses — NEET Biology

Which of the following statements correctly provides evidence or reasoning in support of the 'RNA world' hypothesis? S1: The existence of RNA molecules, such as ribozymes, that can catalyze biochemical reactions, demonstrates RNA's capacity for both genetic information and enzymatic function. S2: Essential cellular processes like metabolism, translation, and splicing are widely understood to have foundational evolutionary roots revolving around RNA. S3: In some viruses, RNA functions as the sole genetic material, illustrating its primitive capacity to store and transmit genetic information. S4: The intricate machinery for protein synthesis, including the structural and catalytic roles of ribosomal RNA (rRNA), is believed to have evolved primarily around RNA. S5: DNA's superior chemical stability and advanced repair mechanisms provided a selective pressure that led to its evolution from an earlier, more reactive RNA-based system.