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.
The National Hamburger Festival. Legend has it that it was two brothers from Akron, Ohio who created the hamburger back in 1885. On the final day of the New York State Fair in Hamburg, NY, Akron natives Frank and Charles Menches ran out of pork for the sandwiches they were vending from their concession booth.