>>12122143There are many reasons why this wouldn't work, but on a molecular level, at least part of this is due to the fact that human oocytes would not recognize non-human sperm.
There is interesting work being done on sperm-egg recognition. For instance in this paper (
https://science.sciencemag.org/content/361/6406/1029), the authors identified a gene that is required for species-specific fertilization. When the authors mutated the gene, cross-species fertilization was possible.
