Bellerophon ease, with the privations suffered by the good—is apparently the basis for Aristophanes' imputation of "atheism" to the poet. The replacement of Bellerophon by the more familiar culture hero Perseus was a development of Classical times that was standardized during the Middle Ages and has been adopted by the European poets of the Renaissance and later. Bellerophon Bellerophon (; Ancient Greek: Βελλεροφῶν) or Bellerophontes () is a hero of Greek mythology. He was "the greatest hero and slayer of monsters, alongside Cadmus and Perseus, before the days of Heracles", and his greatest feat was killing the Chimera, a monster that
Chimera (genetics) was a sexual chimera; as four percent of Roku's blood cells contained two x chromosomes. A major milestone in chimera experimentation occurred in 1984, when a chimeric geep was produced by combining embryos from a goat and a sheep, and survived to adulthood. The creation of the "geep" revealed several complexities to chimera development. In implanting a goat embryo for gestation in a sheep, the sheep's immune system would reject the developing goat embryo, whereas a "geep" embryo (sharing markers of immunity with both sheep and goats) was able to survive implantation in either of its parent species. In August