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
WFPG-TV WFPG-TV WFPG-TV was one of the earliest UHF television stations in the United States, licensed to Atlantic City, New Jersey. The station broadcast over channel 46 from December 1952 until May 1954, and held affiliations with all four major networks of the era: NBC, CBS, ABC and DuMont. Geographically, New Jersey is sandwiched between New York City and Philadelphia. Between them, the two large cities were granted most of the available VHF channels. The only VHF station assigned to New Jersey was located in Newark, the state's largest city. However, channel 13—WATV, later to become WNTA-TV (and now WNET) --