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.
Where Did the Name Hamburger Come From. and Other Food Name Origins. It's thought to have come from the town of Hamburg, Germany. Here is where it's thought hamburger (originally called hamburger steak) was invented. The word hamburger first appeared in English in the late 1800's. This goes back to President Thomas Jefferson.