Ciliate conjugation is a sexual phenomenon that results in genetic recombination and nuclear reorganization within the cell. In most ciliate groups, however, the cells separate after conjugation, and both form new macronuclei from their micronuclei.
Before the bun, hamburgers are said to have been served between two pieces of bread. In fact, a ground beef patty was known as Hamburger steak (first mentioned in an American cookbook in 1891); when this was put between bread or in a bun it was called a Hamburger sandwich.
A sandwich made with a patty of ground meat usually in a roll or bun. [Short for. , after Hamburg .]. Word History: The German word Hamburger, literally meaning from the city of Hamburg, begins to appear on American menus in the late 1800s during a period of heavy German immigration.At first, it is found in the form of hamburger steak, a name for a ground beef patty served as an entree. entrÃ©eord History: The German word Hamburger, literally meaning from the city of Hamburg, begins to appear on American menus in the late 1800s during a period of heavy German immigration. At first, it is found in the form of hamburger steak, a name for a ground beef patty served as an entree. entrÃ©e