Answer:
increase ozone in the stratosphere
This would be an example of:
C) an insertion mutation.
Notice how the sequence contains the same letters as before, only an A is added to the beginning. Adding extra nucleotides is an example of an insertion mutation, a type of frame-shift also, because the reading frame will be thrown off downstream.
Restriction enzymes identifies specific sequences in the DNA (Deoxyribonucleic acid) and cut the DNA to produce fragments. These enzymes are used in the production of the recombinant DNA. These enzymes cut out the specific required fragment of the DNA, which is then incorporated into the bacteriophage. This recombinant phage DNA then infects the bacterial cell, which produces new particles with this foreign recombinant DNA.
