4. An intron is a section of . A) protein that is clipped out posttranslationally B) RNA that is removed during RNA processing C) DNA that is removed during DNA processing D) transfer RNA that binds to the anticodon E) carbohydrate that serves as a signal for RNA transport

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.