The evolutionary tree below shows 13 living species labeled as 'S1' through 'S13'. Use it answer the question: From the choices given, which 2 species
from the tree would you expect to have the most differences between
each other?

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.