HMS Bellerophon (1786) Admiralty at the time, John Montagu, 4th Earl of Sandwich, had apparently selected the name from Lemprière's Classical Dictionary, which he kept on his desk. The recently ordered 74-gun ship was thereafter to be named after the Greek warrior Bellerophon who rode the winged horse Pegasus and slew the monster Chimera. The pronunciation proved difficult for the ordinary sailors of the period, and she was widely known by variants, most commonly "Billy Ruffian" or "Billy Ruff'n", although "Belly Ruff One" appears in a satirical 1810 print by Thomas Rowlandson, and "Bellyruffron" in the novel "Poor Jack" by Frederick Marryat. She
Chimera (genetics) give rise to the embryo proper. Embryos that are to be used in chimeras can further be genetically altered in order to specifically contribute to only one part of chimera. An example is the chimera built off of ES cells and tetraploid embryos, which are artificially made by electrofusion of two two-cell diploid embryos. The tetraploid embryo will exclusively give rise to the trophectoderm and primitive endoderm in the chimera. There are a variety of combinations that can give rise to a successful chimera mouse and — according to the goal of the experiment — an appropriate cell and embryo