How is engineered dna put into plants?
a. gene constructs (or 'transgenes') can be readily made in the laboratory by fusing together dna segments from different sources.
b. if done correctly, these cloned constructs can be delivered into plants where they will be stably integrated into the plant’s dna and expressed to confer new and useful traits.
c. gene constructs can be introduced into plants by

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.