Epigenetic regulation of transposable elements in the plant kingdom which allows for self-copying) within the coding of the transposon defines class I elements as autonomous or non-autonomous. Class I transposons can take the form of: Curiously, retrotransposons have been discovered to be the predominant form of transpositional element in plants with large genomes, such as maize and wheat, potentially indicating rapid success of this class of transposon in the creation of hybrids, such as wheat, peppermint and, in the distant past, maize. Plant hybridization often creates polyploids, with double, triple, quadruple or more the number of chromosomes present in the parent generation. Polyploid hybrids seem to be particularly susceptible
Quadruple champion lightest divisions from Minimumweight (105 lbs), Light Flyweight (108 lbs), Flyweight (112 lbs) to Super Flyweight (115 lbs). Gamez did it on October 9, 2000. Some boxers have managed to win four titles and become Quintuple Champions. Quadruple champion In different sports when a sportsman wins four crowns, titles, medals, belts or another distinctions is called a Quadruple Champion. In boxing, a quadruple champion is a boxer who has won world titles in four different weight classes. The first ever man to earn that enormous distinction was Thomas Hearns on October 29, 1987. Hearns won his first four titles at