Reproductive isolation from a cross between a horse and a donkey or between a mare and a donkey, respectively. These animals are nearly always sterile due to the difference in the number of chromosomes between the two parent species. Both horses and donkeys belong to the genus "Equus", but "Equus caballus" has 64 chromosomes, while "Equus asinus" only has 62. A cross will produce offspring (mule or hinny) with 63 chromosomes, that will not form pairs, which means that they do not divide in a balanced manner during meiosis. In the wild, the horses and donkeys ignore each other and do not
Leo Africanus his possible return to North Africa. A fictionalized telling of Leo's life is presented in an eponymous novel by Amin Maalouf. A fictionalized account of his life, "Leo Africanus", by the Lebanese-French author Amin Maalouf, fills in key gaps in the story and places Leo Africanus in prominent events of his time. The BBC produced a documentary about his life called "Leo Africanus: A Man Between Worlds" in 2011. It was presented by Badr Sayegh and directed by Jeremy Jeffs. The film followed in Leo's footsteps from Granada, through Fez and Timbuktu, all the way to Rome. It has been