In an E. coli culture lactose is used as food instead of glucose. If so, answer the following questions:(1) How do the bacteria respond to the above situation at genetic level?(2) If lactose is removed from the medium what will happen?

In an E. coli culture lactose is used as food instead of glucose. If s

1.	In an E. coli culture lactose is used as food instead of glucose. If so, answer the following questions:(1) How do the bacteria respond to the above situation at genetic level?(2) If lactose is removed from the medium what will happen?
Answer» In this closely associated genes function as unit called operon If lactose is present in a medium, it has to be breakdown into glucose and galactose ,for this positive control of operon works and structural genes transcribe with the help of switch on condition of operator gene. This is due to binding of RNA polymerase on promoter site of DNA.