Some species of hares are brown most of the year, but change color to white in the winter. This allows them to blend in through the seasons. Where are these organisms adapted to live?

Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.