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
Equus (comics) the ability to continue functioning after death. Equus (comics) Equus is a fictional comic book supervillain, a cyborg mercenary in the DC Comics universe who serves as an opponent of Superman. Created by writer Brian Azzarello and artist Jim Lee, he first appeared in "Superman" #206 (August 2004), which was published in June 2004 as part of the "" storyline. Equus first appears in the third issue of the year-long "" storyline that ran in "Superman" in 2004 and early 2005. A prototype for the OMAC Project, he comes into conflict with Superman when the superhero discovers that "The Vanishing",