Fish developed many characteristics for survival. Match the parts of the fish to their correct functions. allow the fish
to breathe
underwater
protects the fish
from the external
environment
creates balance and
helps with escape
and predation

eye
gills
fin
mouth
scales

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.