Dolly

Unlike the French roulette where the croupier simply points with the stick on the winning number on the table, in the American roulette the croupier uses a marker made of wood or plastic and places it on the table in the square of the winning number. The score marker is called 'dolly' because it has the outline that looks like a doll. Its functionality is primarily to help the players know the winning number until all winnings are paid.

The first mammal (a sheep) to be created (via nuclear transfer ) by the cloning of an adult cell (from the mammary tissue of a ewe). This showed that the process of differentiation into adult tissue is not, as previously thought, irreversible.