It's a good thing Louis Pasteur had a decent last name to lend to an acceptable term like pasteurized milk because can you imagine if his last name was instead something like Jizzeur?
It's wild that you can just do anything. Date the wrong person, choose the wrong career. You can go outside and start eating dirt if you want, and the universe lets you. Not even a pop up like "Are you sure?"
Hybrids are indicated with an “x”. Hybrids that have been named are written with the x between the genus and species name. For example, Solanum x procurrens is the hybrid between S. nigrum and S. physalifolium. If a hybrid hasn’t been named, or if you want to specify the parentage, the same hybrid can be written as S. nigrum x S. physalifolium.
One is physical, where the sperm dies before it can reach the egg, due to different chemical environments in the uterues, or simply cannot reach the egg.
The other is genetic, where either each animal has a different number of chromosomes, so the genetic information from the father can't find a suitable match with the information from the mother.