Afarmer is being troubled by coyotes eating his sheep. in an attempt to solve the problem, he kills a sheep and laces its body with a nausea-inducing drug. he leaves the sheep out where he knows the coyotes roam. he hopes they will learn not to eat the sheep. the farmer is attempting to apply the principle of to accomplish this.

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.