It occurs only in cells in the reproductive structures of organisms.
Meiosis only occurs in the reproductive cells, producing gametes with half of the genetic information as the parent cell.
They pollinate plants, which saves farmers work. Insects such as bees and butterflies help to pollinate plants.
Answer:
It's B - How much water is used to produce one paper bag?
The lac repressor protein is bound to the operator region of the lac operon when there is no lactose in the medium. When introduced in lactose, it binds to an allosteric site on the repressor causing its to change conformation and release from the operator. This allows the polymerase that is bound to the promoter region to proceed transcription of the lac operon genes (LacZ, Lac A, and Lac Y). Translation of these genes forms enzymes that enable the organism to break down lactose for energy.