A mutation in the 5ʹ UTR of the trp operon results in region 2 always pairing with region 3. The effect of this mutation on the trp operon when tryptophan levels are high would be that the mutation would .

If all prokaryotes on earth suddenly vanished, which of the following would be the mostlikely and most direct result? a) the number of organisms on earth would decrease by 10—20%.b) human populations would thrive in the absence of disease.c) bacteriophage numbers would dramatically increase.d) the recycling of nutrients would be greatly reduced, at least initially.e) there would be no more pathogens on earth.