The nucleus maintains the security of the genes and controls the functions of the entire cell by regulating gene expression. This is why the nucleus is sometimes referred to as the control center, or the brain, of the cell.
Patagonia - region in southern South America between the Andes and the South Atlantic. Argentina, Argentine Republic - a republic in southern South America; second largest country in South America.
Truly unique in the world. Patagonia has been, right from the beginning a land of adventurous sailors. It is by sea that the explorers who first arrived marveled at this world of fierce contrasts and it is in the sea -literally- where some of its original inhabitants lived. We suggest you to get the best fabulous Patagonian landscapes navigating. Patagonian cruises are the inevitable choice on a trip to Worldâs End.