> During the 1920s, a Russian biologist with the marvelously Slavic name Ilya Ivanovich Ivanov appears to have made the first serious, scientifically informed efforts to create a genetic hybrid between chimpanzees and human beings. Ivanov had the perfect qualifications: Not only did he possess a special interest in creating interspecific hybrids, he was an early specialist in artificial insemination, who had achieved international renown as a successful pioneer when it came to horse breeding. Prior to his work, even the most prized stallions and mares were limited to reproducing by “natural cover”—i.e., the old-fashioned way, one mounting at a time. But Ivanov found that by appropriate and careful dilution of stallion semen, combined with adroit use of the equine equivalent of a turkey baster, he could generate as many as 500 foals from a single genetically well-endowed stallion. His achievement caused a worldwide sensation, but nothing compared to what he next attempted.
> And failed.
Much was not understood in 1920s which is why they would fail. A reminder: it was almost a century ago.