Lightning bugs contain a gene that creates a protein known as luciferin, which makes them bioluminescent (glow). If the researcher replaced genes Z, Y, and A of the lac operon with the gene for luciferin, how would this affect the bacterium? * 1) The bacterium would glow when it is fed milk.
2) The bacterium would glow when it is exposed to light.
3) The bacterium would not glow since the lac operon has been mutated.
4) The bacterium would not glow since the bioluminescence gene is from a different species.