Alice put identical bean seedlings in paper cups with good soil. She covered each cup with a different transparent plastic -clear, red, green, and blue. She set the cups in the sun, watered them identically, and kept a record of the height of each plant. What is the control of this experiment?

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.